OutOfMemoryError: Java heap space

[RsLeafy]

I was attempting to make a half slab for a custom block but when I tried to create a new world it froze. The error is talking about collision boxes so I just deleted my half slab file and removed all references to it. Unfortunately that did not work and continues to crash. It worked without any issues before I tried to add the half slab.

 

I'm not sure what files to add because I already deleted the half slab file.

 

Crash report: http://pastebin.com/wZ4Wuk5X

[RsLeafy]

I had Minecraft running at 2GB, I changed it to 3GB and still no change.

[RsLeafy]

But that makes no sense, I run much bigger projects than this one and it doesn't cause an issue there. All this mod does in its current state is add two blocks in and spawn in a structure.

[Draco18s]

Its an out of memory error likely due to a memory leak, in which case Adding More Memory will not solve the problem.

[RsLeafy]

How might I go about finding and fixing the memory leak?

[Draco18s]

Sadly, that requires knowing what you've done and the side effects thereof.