Symphony.

Hello,
I just updated from 2.3 to 2.6.2. I could not access a section because one extension was causing troubles. So I could not change section, nor remove the troubling extension because it was in use. I tried to uninstall it, but I could not. Deleting the extension let me delete the extension entry, but repasting and re-enabling it created a sql error. So basically I am stuck and the system is screwed. Any suggestion?

Thanks

Restore from backup, uninstall the incompatible extension, update again.