I have changed my pc from WIN95 to XP and now can only download from my machine. I'm using Bobcad V18. Every time I upload it from Bobcad the machine gives an alarm.
Is this an XP problem.
I would suggest calling support. Bobcad has a great support system and it most liekly is a port setting or an XP setting that will do this. It may have even renumbered your ports.
It could however be something simple like limiting the port speed in the control panel.