Slic3r hangs upon running this post-processing script

[fuchstraumer]

When running this script in Slic3r 1.2.9, slic3r hangs at "running post-processing scripts". I've had some serious issues with the perl intepreter not working, but this script seems to work from the command line. What should be the program used to open .pl scripts like this one? I have it set to perl.exe, should it be wperl.exe? For whatever reason, it just doesn't seem to really work. I'm not sure this is really an issue, but I've looked everywhere I could and tried my very best google-fu. I'm using strawberry perl, and have had some weird issues with getting it to run any sort of script in general. It usually just pops up an empty console window when I double click a perl script.

Any help would be greatly appreciated. I've tried to fix whatever's going on as best as I could, but figured going to the source could be my very last step if I got truly stuck. Thanks.