First of all I do experience lots of hungapps (Not responding) status when operating this program.
Usually it crashed on me when hiting serial port button. Then when I finally managed to brake through hungups this is what I saw:
It's not like there (Com 1 should read N N N N Y Y on the signals)
and after I put the dot on com1 and hit OK it hungups again
I did disconnected the UPS end of the cable, completely switched off pc. Turned it on back again. And there were still lots of hungapps.
When I disconnected the RS 232 cable from pc restarted and ran the digicom.exe again signals changed to N N N N Y Y on com1, but hangups still occur