KB0005: PowerPoint or Excel automatically disabled the think-cell add-in

Cause

PowerPoint and Excel automatically disable add-ins that haven't started successfully before. Hence, the think-cell add-ins may be disabled if the computer crashed for some reason while starting PowerPoint or Excel.

Solutions

  1. Automatic repair
    1. Close both PowerPoint and Excel.
    2. Start Excel. The think-cell add-in in Excel will automatically try to repair the PowerPoint add-in settings. Close Excel again.
    3. Start PowerPoint. The think-cell add-in in PowerPoint will automatically try to repair the Excel add-in settings.
    4. Check to see if the problem is solved.
  2. Manual repair in PowerPoint [Excel] (Office XP and 2003)
    1. Start PowerPoint [Excel].
    2. Go to the Help menu and click About Microsoft PowerPoint [About Microsoft Excel].
    3. Click the button Disabled Items....
    4. If think-cell is in the list of disabled items, select it and click the button Enable.
    5. Click Close and then OK to return to PowerPoint [Excel].
    6. Close PowerPoint and Excel.
    7. Restart PowerPoint/Excel and see if the problem is solved.
  3. Manual repair in PowerPoint [Excel] (Office 2007)
    1. Start PowerPoint [Excel].
    2. Open the Office menu in the upper left corner of the window and click PowerPoint Options [Excel Options].
    3. Go to Add-Ins and in the selection box at the bottom of the dialog, select Disabled Items. Click the Go... button.
    4. If think-cell is in the list of disabled items, select it and click the button Enable.
    5. Click Close and then OK to return to PowerPoint [Excel].
    6. Close PowerPoint and Excel.
    7. Restart PowerPoint/Excel and see if the problem is solved.
  4. Manual repair in the Registry
    1. Enable the addin tcaddin for Powerpoint and Excel in the Registry by following the instructions in KB0114: How to enable/disable think-cell and other Office add-ins in the Windows registry