So right now what is the problem with the cores?
They boot but they won't load any games or what is exactly the problem?
Try to narrow down the problems, a simple "doesn't work" will not help.
Explain in detail what happened.
I also suggest to make a clean install of everything RetroArch.
Delete the /retroarch/ folder if you already had one, and download everything again from the buildbot nightly page.
Also, try to specify if you guys are using the standalone retroarch.rpx with playlists, and/or if you are using per-core rpx apps.
It would be interesting to see if the problems which occur with the retroarch.rpx and playlists can be replicated by launching per-core RPX apps.
Let's say you are testing GenPlus:
- Try testing it inside the main RetroArch app (retroarch.rpx)
- Try testing the individual core RPX app (genesis-plus-gx.rpx)
See if the problem is replicated with both versions or if it's specific to one in particular.
Remember to also do the tests in Haxchi HBL and/or channel HBL.
This is also important.