PST Capture Import errored: Complete with errors.

we did a migration from Exchange 2007 to 2010, we already have PST files and want to import them using PST Capture to the new Mailboxes in the new domain.

while importing we were faced with an error saying "Complete with errors, hresult e_fail has been returned from a call to a com component", in the IPM subtree.Any solution to address the problem?

thanks in advance.