Acrobat Stamp, Acrobat has encountered a problem

I have a customer who use the Stamp function in Acrobat.  When she use it, it will appear and allow to use it fine, and she can save it.  After that, she will close the program and reopen Adobe acrobat again, and open up another file, using the Stamp function.  However, this time around, it display an error message:

"Acrobat has encountered a problem.  Some features may not work as expected."

If she checks the, Do not show this message again, and click OK, obviously, it will go away, and not showing up.  That also doesn't fix the problem that the Stamp tool doesn't appear.  Only way to get it working again is, sign out of Acrobat, and sign back in, each time.

I have tried a few things to test,  went to control panel, change, add features.  I have changed the compatibilty view.  I have disabled the Protection function in Security (Enhanced).  Nothing worked.  

I also tried to change to Classic View, that seems to allow the Stamp tool to appear and working, but when I go to save the file, the error message appears again, and after click OK, the screen turns into a white box.

I have the same customer to use another laptop with her account signed into Acrobat, same results.  Any suggestions?