I experience similar issues like this every time I try to play, though it's almost never directly on startup.
My Minecraft will start up just fine, and play mostly fine for an hour or two and then crash without warning. Freezing occasionally happens as well and is always followed immediately by a communication error (though I believe the error is directly related to the freezing itself). I can end up losing anywhere from 15-30 minutes worth of progress and 7/10 times will either duplicate items that were on my person or lose items in my surroundings (like boats and tamed mobs), which may have caused a storage issue with my last world as it was suddenly at 400mb after one crash.
The crashing has happened in all Survival worlds I've tried to, and it doesn't appear to be related to any particular items, terrain, or coordinates as it has happened in multiple biomes and locations. They frequently happen with the Natural Texture Pack and the Chroma Hills texture pack. They occur with the basic textures as well, but not as quickly or as often (recent test let me go around 5 hours before a crash hit with the normal texture pack). I don't pay attention enough to see if they happen during auto-saves or not.
In attempts to resolve this issue, I've tried:
Checking for corrupted data (none is ever found).
Re-downloading the game without deleting saved data (done two different times).
Deleted saved data, deleted the game, and then re-downloaded it.
The crashing got worse for me AFTER the 1.12 update was released. I had previously experienced very minimal crashing and was otherwise able to play the game just fine.
I experience similar issues like this every time I try to play, though it's almost never directly on startup.
My Minecraft will start up just fine, and play mostly fine for an hour or two and then crash without warning. Freezing occasionally happens as well and is always followed immediately by a communication error (though I believe the error is directly related to the freezing itself). I can end up losing anywhere from 15-30 minutes worth of progress and 7/10 times will either duplicate items that were on my person or lose items in my surroundings (like boats and tamed mobs), which may have caused a storage issue with my last world as it was suddenly at 400mb after one crash.
The crashing has happened in all Survival worlds I've tried to, and it doesn't appear to be related to any particular items, terrain, or coordinates as it has happened in multiple biomes and locations. They frequently happen with the Natural Texture Pack and the Chroma Hills texture pack. They occur with the basic textures as well, but not as quickly or as often (recent test let me go around 5 hours before a crash hit with the normal texture pack). I don't pay attention enough to see if they happen during auto-saves or not.
In attempts to resolve this issue, I've tried:
The crashing got worse for me AFTER the 1.12 update was released. I had previously experienced very minimal crashing and was otherwise able to play the game just fine.