TCObject - "All Objects" Code Collection information for Object is incorrect
The error only occurs under these conditions:
Other client boxes that have Toad for Oracle 12.5 or below installed and any version of SQL Navigator are fine.
WORKAROUND:
One machines where both Toad for Oracle and SQL Navigator for Oracle are installed, no conflicts should exist with Toad for Oracle 12.5. Recommended to install and use Toad for Oracle 12.5 or earlier side-by-side. Click here to download Toad for Oracle and ensure to change the version from drop-down list.
STATUS:
Waiting for a fix in a future release of Toad for Oracle.