When upgrading from a previous version, the installer may have created/modified a few columns in error. While no data would be lost, it could prevent you from performing certain tasks in SpiraPlan.
The v6.8 installer was fixed as of v18.104.22.168, and future releases will not have this issue. (To check your installer version, right-click on the EXE and select 'Properties'. In the dialog that opens, select the 'Details' tab. The version is in the "File Version" entry.)
To fix the bad tables, have your DBA execute the attached SQL file on your database. Changes will take effect immediately upon execution, and users should not receive the error afterwards.