realport "blue screen"

a vmware Virtual server OS: windows 2008
Every time I install the Realport on Com3 it blue screen’s my Windows 2008 server -
any ideas?

Are you using the most current RealPort driver, downloaded from the Digi website?

Does the issue still happen if you choose a different COM port number (Note, the COM port number can be changed after installation).

Have you disabled any antivirus software first?