I guess I see the problem now.
This munge.bat is located in _BUILD_PC/Sides
Back up 2 files: "clean.bat" and "munge_side.bat"
Now, remove the clean.bat from that folder
Then edit munge_side. bat and delete this line:
"modelmunge -sourcedir ..\..\..\Sides\%1 -platformdir ..\..\..\_source_pc\Sides\%1 -platform pc -inputfile !*.msh -outputdir munged\ -checkdate -maxbones 16 -keep collision -continue -righthanded"
Munge your world. It should work now.
This munge.bat is located in _BUILD_PC/Sides
Back up 2 files: "clean.bat" and "munge_side.bat"
Now, remove the clean.bat from that folder
Then edit munge_side. bat and delete this line:
"modelmunge -sourcedir ..\..\..\Sides\%1 -platformdir ..\..\..\_source_pc\Sides\%1 -platform pc -inputfile !*.msh -outputdir munged\ -checkdate -maxbones 16 -keep collision -continue -righthanded"
Munge your world. It should work now.