Hallo everybody. Same problem. After hours of researches, I discovered it can be related to WIDCOMM driver version. Version 6.x (actual version installed on Win7 and later) doesn’t work. Version 5.x seems to work but I didn’t find any installation package of this version. I’ve tried inside an Win XP virtual machine and it works great!!! Maybe this will be my workaround.
Cheers, Willy.