Ok... let us know...
OS3.x badly needs an up-to-date xadmaster (for example for many LHA archives incompatible with old format supported by current 68k xadmaster).
Examples of problematic LHAs (for testing) giving errors decompressing through XAD (I use
http://m68k.aminet.net/search?query=voodoo-x ):
http://m68k.aminet.net/package/dev/mui/MCC_NList-0.128