No, the problem was occurring in Traktor 3.4 not PRO. Never had PRO on the desktop till I did the following.
Reverted back to a clean install by using the image I made of the hard drive from last year. I updated all the drivers, installed Traktor Pro 1.1 and all is well on the desktop using Traktor PRO and VCI-100SE. Yeah!
I haven't tried to install Traktor Pro on to the laptop since it is about 4yrs old and only has 512mb ram (even though Traktor 3 works under these conditions).
Seems I am good at the moment. Thanks for all the help.
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