Solve Toad Problem : ''00.00.0000 00:00:00'' is not a valid date and time

Yesterday , I had a problem at Toad  , when I exported data to Excel file I had the following error :

 EConvertError ''00.00.0000 00:00:00'' is not a valid date and time.

After two hours I found the solve :

1. From "Utilities" Menu select  "Task Scheduler"
2. You will found one task or  more that have the same error above and it is highlighted  with white color.
3. select  it  - if you can't then just click mouse on it and then move mouse to title bar - then delete  it
4. That It !! Enjoy

Note:It works for all toad versions