Jim Hollis
Comments
Just added my most recent launcher log. No change in the results. Still can't create java virtual machine.
Added Launcher Log per request.
Same experience. Mine seemed to start after opening the world to LAN so that I could enable cheats. I executed the Firetick command to stop a burning fire. Sleeping was normal before that, but since then the problem persists after closing and reopening Minecraft.
Same issue on my Windows 7 client. Placing fuel in furnace crashes game.
I removed the 'UseConcMarkSweepGC' argument and all Java path and memory allocation Environmental Variables from Windows. My Java arguments for 1.17- pre4 then read like this:
-Xmx1G -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
When I hit "Play" I got the same "Could not Create Java Virtual Machine" error.
However, I then hit the "Reset" button next to the JVM Arguments, and it replaced my arguments with this:
-Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
When I saved these options, Minecraft started and I was able to create a new world!