I just think, posting such issues about a 3rd party control at respective Forum would be more useful.
Google's first page has no result regarding any TabPro control. Not sure if it even exists or has been discontinued now.
You need to talk to your seniors and get more info around this control and then talk to the issued party to see if there is any new version that can be used or not.
Most likely, I doubt that this TabPro control is compatible with VB.NET. You got to see alternative now, may be some free control would do your job. There are lots of free tab controls in market now, search and look for them online.
UPDATE:
After you posted the full control name, Google did returned some useful links.
They have their support forum and community both. I would suggest to post there and talk to them.
GrapeCity Forums[
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For Support[
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