Do you mean you have upgraded a project from vb6 to vb.net?
it sounds like AxMSComctlLib is a VB6 component (com object?) which cannot be loaded in .net. Do a google search for AxMSComctlLib and you'll find loads of links to the same problem you're having.
the upgrade wizard is fairly rubbish, most people seem to reccomend re-writing an app for .net rather than upgrading it