[Dx4win] Exception occured error

[Bill]

Hello,
I am getting the error message "An exception occured" when I try to connect via internet.  
I recently upgrade my computer.  I am still using same configuration and Win XP operating system . Changed nothing. I did upgrade to V6.03 from V6.02. 
I have TNC Interface set up as before, TNC - regular; Port - TCP/IP...

Any idea why I can not connect via internet?

Thanks
Bill W4WX