From looking at your log it seems that the program cannot find the modules folder. Open spicecfg.exe and click the options tab, scroll down to "Modules Folder Path" and specify the path to the modules folder.
You are aware that all git pull requests are saved right? whatever was there is easily downloadable from the github page, its all a matter of going through the requests and downloading the version before he removed those specific games.
I used the DDR A Update Pack and it works fine but I noticed in the readme.txt it says "Once extraction is done, go to contents/data/arc folder. You should see startup_v1.arc and startup_v2.arc files." I do not see those files.