Screen goes black when adding signature
I am using Adobe Reader DC and I would like to digitally sign a document. When I try to digitally sign it, the screen goes black, nothing happens and I have to press Esc to return to the document.

This fix didn't work
Launch Reader > Edit > Preferences > Signatures .
Under Creation & Appearance > click More > uncheck use modern user interface for signing....
Relaunch Reader and check.
