Okay so I dunno what I did, but after I had finished up making my map and finished exporting it, I closed FH for a while, and when I opened it again, it just freezes to black screen for a few seconds and then says that it has stopped working.
The FH.txt log looks like this:
Capabilities:: VertexProgram: YES
Capabilities:: FragmentProgram: YES
Sound:: Initialized: YES
ERROR::SaveFile:loadz: WaterMillGates.cfg failed!
ERROR::SaveFile:loadz: WaterMillGates.cfg failed!
ERROR::SaveFile:loadz: WaterMillGates.cfg failed!
I tried installing it again, didn't help.
There weren't no double particles, that was what I checked first~