I don't know if this may help;-
Program consists of 55 files 3 folders
Starts with .exe file. Other than usual .dlls there are
796 KB of files with .aw and .wtr extensions
4KB .psi / 13203KB .dat / 4100KB .dct 26541KB .vlf / 99086KB .its / 185KB .ndx
Disk used 16.1GB / unused 58.3GB
Actually the profram is microsofts Autoroute express 2001
If this is the program causing the hang are there particular items, e.g files with particular extensions it would be safe to exclude? Can you also enlighten me why, as I said in OP, the sequence of files scanned appers to change?