> but maybe a little issue with the old mame files?

Direct import from 37b16 works fine here. Currently I got no idea why direct import from 36b1 fails. The mame exe doesn't output anything when called via clrmame.
The samplefolder issues are caused by bad entries within mame 36b1. No way around that. Will do some more tests with 36b1 later at home...but I guess it's caused by the mame exe and not cmpro.

Roman Scherzer
ClrMamePro