Error "Unspecified error" opening the Editor and/or changing the active Editor tab (4379778)

Error "Unspecified error" opening the Editor and/or changing the active Editor tab after upgrade to Toad for Oracle 2025 R2 Subscription edition. 

Error occurs in some environments. The exact cause is under investigation.

Workaround:
Disable the AI Explain dock panel/tab with the following steps:

Note: Modify both SQL and PL/SQL Editor tab types. By default, SQL tab type is opened. The type of tab is indicated by the tab icon. e.g. the icon will show either SQL or PL/SQL to reflect which type of tab. 

1. Close Toad if it is open
2. Navigate to Toad’s User Files folder
   1. The default location is %APPDATA%\Quest Software\Toad for Oracle\Subscription\User Files, e.g. C:\Users\your_username\AppData\Roaming\Quest Software\Toad for Oracle\Subscription\User Files
3. Delete all Editor desktop layout files to return the Editor’s desktop layout to its default configuration
   1. These files match the pattern EditorDesktopLayout_*.lay
   2. These files exist in the root User Files folder, only
   3. All files matching the pattern should be removed
4. Start Toad
5. Open the Editor
6. If an error is encountered, click OK to dismiss it
7. Right-click within the Editor and choose the Desktop submenu
8. Click the AI Explain item to uncheck it – this removes the AI Explain panel/tab from the Editor desktop
9. Right-click within the Editor and choose the Desktop submenu
10. Choose Save Desktop and click OK to overwrite the current configuration
11. If this tab is of the SQL type, open a new PL/SQL tab and repeat steps 6-10 for the PL/SQL tab. If the tab you’ve corrected is of the PL/SQL type, open a new SQL tab and repeat steps 6-10.

Status:

Issue fixed in Toad for Oracle 2025 R2

The latest version of Toad for Oracle can be downloaded here:

Windows

Mac