Lads...
I'll upload the mame 0.76 roms to ivwshane's ftp soon.
I thought I should mention that I use mamediff to determine what roms are required. I use the -S -T options when generating my version change sets.
-S means I use split sets.
-T means it should produce a tiny dat (only list roms that have changed).
I do this to save space.
You need to use clrmamepro to rebuild your sets, with each set of roms for a particular version in seperate folders -> rebuilt back to a single folder.
I guess the point of all this is... DONT just copy the roms from v 0.75 over those in v0.74 as this won't provide you with a correct set. You MUST rebuild them.
I hope that's clear, if not, err, I can try and explain it again ?