strange ribbon inhibition in adt 2010

[marcuzioo]

hello to all, I ask you a hand to solve an absurd problem.
It happens to me lately that if I change any multiline text of a table, at the time when I give "ok" to confirm the changes, the ribbon becomes light gray, all the commands are inhibited and I can no longer use the program...really strange!
The only thing I can do is save, close the program and relaunch it to reopen the table. changes to the text are saved.

I have no use problems if I use any other feature of the software, this only happens when I edit a text.

do you have any suggestions for this strange behavior?
Thank you!

 

[stefanobruno]

Do you have the service packs installed?
autocad mechanical 2010 update 2 fixes something in the edit of multiline text

 

[marcuzioo]

Thanks for the answer.
Unfortunately I solved reinstalling the software... it didn't give me another chance.
It comforts me to know that at least it is a known problem!