I'd do:
1. Export your styles.
2. Drop ALL of your database files for that database.
3. Run "createtables.php" from your install directory.
4. Run the importer.
5. After the import, login to your admin user and import your styles you exported from step 1.

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
Do you need Forum Install or Upgrade Services?
Forums: A Gardeners Forum
UBB.threads: UBBWiki, UBB Styles, UBB.Sitemaps
Longtime Supporter & Resident Post-A-Holic
VNC Web Services: Code Modifications, Upgrades, Styling, Coding Services, Disaster Recovery, and more!