Why does AdobeAcrobat always crash when trying to Fill and Sign?

[monicap68946528]

I seem to be unable to sign a pdf document with AdobeAcrobat 11.0.20 on Mac OS X 10.11.6

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)

Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000004

Exception Note:        EXC_CORPSE_NOTIFY

This is a new feature...

What is going on?