Please try the steps below to resolve your error.
1. Locate your USB flash drive.
2. Open the archive.pst file from your USB flash drive using your Outlook program.
3. Force Outlook to Archive so you have an empty archive.pst container in the default location.
4. With the original archive.pst file open from the flash drive, manually copy each folder to the new archive.pst file.
Hope this helps.
A. Trivedi