Crash on start when resolution is changed in profile
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message.
From the launcher_log.txt:
[1025/174005:INFO:GameCallbacks.cpp(178)] launcher/launcher (main) info Exception in thread "main" joptsimple.OptionArgumentConversionException: Cannot parse argument '--height' of option width at joptsimple.AbstractOptionSpec.convertWith(AbstractOptionSpec.java:92) at joptsimple.ArgumentAcceptingOptionSpec.convert(ArgumentAcceptingOptionSpec.java:277) at joptsimple.OptionSet.valuesOf(OptionSet.java:223) at joptsimple.OptionSet.valueOf(OptionSet.java:172) at net.minecraft.client.main.Main.main(SourceFile:90) Caused by: joptsimple.internal.ReflectionException: java.lang.NumberFormatException: For input string: "--height" at joptsimple.internal.Reflection.reflectionException(Reflection.java:136) at joptsimple.internal.Reflection.invoke(Reflection.java:118) at joptsimple.internal.MethodInvokingValueConverter.convert(MethodInvokingValueConverter.java:48) at joptsimple.internal.Reflection.convertWith(Reflection.java:124) at joptsimple.AbstractOptionSpec.convertWith(AbstractOptionSpec.java:90) ... 4 more Caused by: java.lang.NumberFormatException: For input string: "--height" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:580) at java.lang.Integer.valueOf(Integer.java:766) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at joptsimple.internal.Reflection.invoke(Reflection.java:116) ... 7 more
Linked Issues
is duplicated by34
Created Issue:
Crash on start when resolution is changed in profile
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message. There is no error in the latest.log (it's empty) nor the nativelog.txt.
The game output viewer shows:
4019 debugs5 infos 16:35:28 launcher main info Preparing to launch minecraft client for 17w43a 16:35:29 launcher main info Checking installations. 16:35:29 launcher main info Minecraft client 17w43a is ready to start. 16:35:29 launcher main info Starting! 16:35:29 launcher main info Using default game log configuration client-1.12.xml (outputs XML)Environment
Windows 7 Professional SP1
Linked Issues
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message. There is no error in the latest.log (it's empty) nor the nativelog.txt.
The game output viewer shows:
4019 debugs5 infos 16:35:28 launcher main info Preparing to launch minecraft client for 17w43a 16:35:29 launcher main info Checking installations. 16:35:29 launcher main info Minecraft client 17w43a is ready to start. 16:35:29 launcher main info Starting! 16:35:29 launcher main info Using default game log configuration client-1.12.xml (outputs XML)Also to differentiate this from the other reports: This
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message. There is no error in the latest.log (it's empty) nor the nativelog.txt.
The game output viewer shows:
4019 debugs5 infos 16:35:28 launcher main info Preparing to launch minecraft client for 17w43a 16:35:29 launcher main info Checking installations. 16:35:29 launcher main info Minecraft client 17w43a is ready to start. 16:35:29 launcher main info Starting! 16:35:29 launcher main info Using default game log configuration client-1.12.xml (outputs XML)Also to differentiate this from the other reports: This does not happen with t1.12
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message. There is no error in the latest.log (it's empty) nor the nativelog.txt.
The game output viewer shows:
4019 debugs5 infos 16:35:28 launcher main info Preparing to launch minecraft client for 17w43a 16:35:29 launcher main info Checking installations. 16:35:29 launcher main info Minecraft client 17w43a is ready to start. 16:35:29 launcher main info Starting! 16:35:29 launcher main info Using default game log configuration client-1.12.xml (outputs XML)Also to differentiate this from the other reports: This does not happen with the 1.12.2 release nor did I have any mod profiles installed before. (The launcher is run in a completely clean folder)
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message.
There is no error in the latest.log (it's empty) nor the nativelog.txt.
The game output viewer shows:4019 debugs5 infos 16:35:28 launcher main info Preparing to launch minecraft client for 17w43a 16:35:29 launcher main info Checking installations. 16:35:29 launcher main info Minecraft client 17w43a is ready to start. 16:35:29 launcher main info Starting! 16:35:29 launcher main info Using default game log configuration client-1.12.xml (outputs XML)Also to differentiate this from the other reports: This does not happen with the 1.12.2 release nor did I have any mod profiles installed before. (The launcher is run in a completely clean folder)
When setting the resolution for the snapshot profile the game fails to start and only shows the "Game Crash" message.
From the launcher_log.txt:
[1025/174005:INFO:GameCallbacks.cpp(178)] launcher/launcher (main) info Exception in thread "main" joptsimple.OptionArgumentConversionException: Cannot parse argument '--height' of option width at joptsimple.AbstractOptionSpec.convertWith(AbstractOptionSpec.java:92) at joptsimple.ArgumentAcceptingOptionSpec.convert(ArgumentAcceptingOptionSpec.java:277) at joptsimple.OptionSet.valuesOf(OptionSet.java:223) at joptsimple.OptionSet.valueOf(OptionSet.java:172) at net.minecraft.client.main.Main.main(SourceFile:90) Caused by: joptsimple.internal.ReflectionException: java.lang.NumberFormatException: For input string: "--height" at joptsimple.internal.Reflection.reflectionException(Reflection.java:136) at joptsimple.internal.Reflection.invoke(Reflection.java:118) at joptsimple.internal.MethodInvokingValueConverter.convert(MethodInvokingValueConverter.java:48) at joptsimple.internal.Reflection.convertWith(Reflection.java:124) at joptsimple.AbstractOptionSpec.convertWith(AbstractOptionSpec.java:90) ... 4 more Caused by: java.lang.NumberFormatException: For input string: "--height" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:580) at java.lang.Integer.valueOf(Integer.java:766) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at joptsimple.internal.Reflection.invoke(Reflection.java:116) ... 7 more
Windows 7 Professional SP1
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MC-123291
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Same happened to me, can confirm. The Resolution in the launcher just adds an argument --height and for some reason the game does not like that.
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
It has been linked to this report. If you have additional information, please add it to the duplicated report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
It has been linked to this report. If you have additional information, please add it to the duplicated report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Ah, that would be MC-121285.
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
This is caused by using a custom resolution when launching the game. Until this issue is fixed, please disable this option in the profile you use.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Duplicate of MC-121285
Exception in thread "main" joptsimple.OptionArgumentConversionException: Cannot parse argument '--height' of option width
Duplicate of MC-121285
Does MC-121285 describe your issue?
Did you change the game resolution? Might be MC-121285
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
This is caused by using a custom resolution when launching the game. Until this issue is fixed, please disable this option in the profile you use.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Thank you for your report!
However, this issue is a Duplicate of MC-121285.
It has been linked to this report. If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
This is caused by using a custom resolution when launching the game. Until this issue is fixed, please disable this option in the profile you use.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Thank you for your report!
However, this issue has been closed as a Duplicate of MC-121285.
This is caused by using a custom resolution when launching the game. Until this issue is fixed, please disable this option in the profile you use.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Changed resolution ticket is MC-121285.
Thank you for your report!
However, this issue is a Duplicate of MC-121285.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
If the cause for the problem was the change of resolution, then this is a Duplicate of MC-121285
Thank you for your report!
However, this issue is a Duplicate of MC-121285.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
Please do not mark unreleased versions as affected. You don't have access to them yet.
Thank you for your report!
However, this issue is a Duplicate of MC-121285.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
It was resolved as a duplicate of MC-121285 which means that this is a known problem and you're not the first one who has found it.
That'll be MC-121285.
I Can play on 18w16a but on 18w19a and 18w20b I cant
I think it because you fix 18w19a (MC-121285) That just what i think
i load it on default,1070 x 720 and 1280 x 720 resolution and it cant work
plz fix this
![]()
it still not fix

Confirmed for 17w43b.
I think thats whats happening to me as well, I hope they can fix this infuriating bug....
I also had this happen on 17w43a just so you guys know.
can confirm for both 17w43a and 17w43b
Can you people please look at the affected versions? You have now written four redundant confirmations.
Here's a video showing that the launcher launches another launcher when it is set to be kept open when starting the game: https://www.youtube.com/watch?v=s6H6Fx_ZG9w
Fabian what do you want us to do, I tried both versions and no luck, and besides we were just trying to let you guys know.
Edit: Ok, sorry if I was across as rude, I am just stressed out by this whole thing....
Quite at the top of the page it tells you "Affects Version/s" where you could theoretically have seen that the versions you guys confirmed as affected were already known/inserted. Fabian just wanted to let you all know where to look the next time so you don't have to unnecessarily confirm. The thing is that everyone who watches bugposts will get an email notification whenever someone writes anything or even just edits their comment. Which means it can get a bit annoying if several people comment or edit unnecessarily
Just keep an eye in the future on the "Affects Version/s", but really thank you for trying to help
(PS: In case you or anyone else seeing this bugpost, not knowing how you can run your launcher as long this bug is not fixed:
Start your client, go to "Launch options", click the Snapshot profile, then simply disable the "Resolution" slider like so: https://puu.sh/y7XLD/0582f4d747.png)
Ok, thanks Meri and again Im sorry guys, i was just stressed I think Ill ty it.
Oh it works thanks.
Confirmed for 17w45a.
I too can confirm with Sebastian Cila above, that this still happens on version 17w45a if 'Resolution' is switched ON in launch settings, but if switched off - game will run fine
confirmed for 17w45b. this is an extremely frustrating one not to fix.
Confirmed for 17w46a.
Confirmed for 17w47a
Phoenix616, you don't have to comment when you can update the affected versions yourself
confirmed for 17w48a
confirmed for 17w49a
confirmed for 17w49b
confirmed for 17w50a
Turning off the resulation does not work for me. It just crashes. Log also does not save.
Then you have a different problem. Try turning on log output.
When booting up the game with the "Resolution" switch on, without even changing the resolution, the launcher gives a pop up saying "Game Crash - An unexpected issue..." while leaving an empty "latest.log". This is on 17w50a.
Edit: I would give the info from "launcher_log.txt" file but it is 14MB.
Edit 2: I deleted it and reproduced the crash and was only left with 564KB. Too big for pastebin, what do I do?Edit 3: I added the log file to the ticket.confirmed for 18w03b
Confirmed for snapshot 18w07b. Same problem.
Crashing with 18w07c too
And 18w08b
Persisting for 18w09a. Can launch without any resolution args but can't customise resolution without it crashing back to the launcher. Zero output or indication as to why this is. Please fix this as it's been an issue throughout and I'd like to play these snapshots.
18w10a also does this. I've uploaded my launcher log to see if it will shed some light on this. There are errors being shown in there that aren't shown as actual errors when viewing the output via the launcher.
Same issue persists, snapshot 18w14b.
Still an issue in 18w15a
Abd 18w16a
Snapshot 18w19a
MacOS 10.13.4 (17E202)
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
Enabling resolution no longer crashes, but it does not use the resolution settings (1708x960). Game is still 854x480.
I can confirm this is the case, and no crashes.

I also tested by completely closing everything and restarting after saving the changes, but it still gets launched with the default resolution, as you can see above.
It seems to work correctly in the updated launcher (2.0.1049)
Confirmed, I've just received the new launcher update, I've been in the 1033 version before, in 18w19a.
All good, thank you
Confirmed. Launcher did not update earlier, even on restart. Now on 2.0.1051, all better. Thanks.