error when launching eduke32 after compiling on Slackware 15 Alpha 1

Been a couple of years since I last used eduke32 so I thought I would compile a recent daily git release. Everything compiled fine, but when I launch I keep getting this error when trying to launch it. This happens on all the releases I've tried so far.

EDuke32 r9252[fatal: not a git repository (or any of the parent directories): .git]-a47a99b33

then it proceeds to show a blank GTK screen.

Any help on what is causing this is appreciated.