larsgerrits

Something is adding -Xmx512M to your JVM options, probably through the JAVA_OPTIONS environment variable. Remove it.

There might be, just not here.

1.7.10 is no longer supported on this forum.

The method to apply potion effects is defined in EntityLivingBase, so if you call World#getEntitiesWithinAABB with EntityLivingBase.class, you can apply the potion effects to them.

World#getEntitiesWithinAABB(Entity.class, new AxisAlignedBB(x,y,z,x+10,y+10,z+10) will return every entity inside a 10x10x10 box and which inherents the Entity class.

You can use World#getEntitiesWithinAABB to get all the entities in an AxisAlignedBB.

No, you don't. Make your own thread and post the log there (without Optifine installed).

Then show us a log from 1.11.

1.7.10 is no longer supported on this forum.

Forge recently had a breaking change which causes mods to crash. One of your mods is not updated to a version of Forge after the change. Unfortunately, the crash doesn't say which mod it is, so you'll have to take mods out to see which is the crashing one.

Also, 1.7.10 is no longer supported on this forum.

You shouldn't have to copy files around when installing Forge. You have to download the installer and use it.

Well, where did you post it then? Certainly not in this thread.

The link to the Gist or Pastebin...

Remove Optifine.

You should update to the registry events.

You should register models in the ModelRegistryEvent.

I'm sorry, but do you actually not know what "post the file" means?

The contents of that file, yes.

Post the contents in a Gist or Pastebin and post the link here.

1.6.4 is no longer supported on this forum.

Post the FML log (logs/fml-client-latest.log).

Post the FML log (logs/fml-client-latest.log).

Make your own thread for your own issue. Also: You're not actually running 1.12....

No, you copy the contents to a Gist or Pastebin and paste the link here.