Well, here we go again. Version 57 of Firefox will not accept (show, whatever) the Acrobat extension that captures a web page. Same thing happened in V56, but the workaround, suggested by Joe (See "Firefox Grr) was to download and install the 32bit version. That worked. Today, with the release of 57, the Acrobat extension is even omitted from the 32bit version. Any suggestions?