You didn’t mention what the “last update” was – DEVONthink, OS X, Word, something else? But I ran Criss’s script through Script Debugger and this statement fails:
set theOldDefaultPath to get default file path file path type documents path
with an AppleScript compiler error “Expected end of line but found class name.” Typically vague Apple error message. I’m running Word 15.16 (151105), and the Word dictionary appears to support this statement, but it actually doesn’t.
Anyway, looks like the script is broken over here because something broke Word’s AppleScript support.
The failed statement is merely the first broken statement in the script – there might be others.