Acrobat XI: Unable to print from Safari using Acrobat toolbar in Yosemite

After recently upgrading our machines to Mac OS 10.10 (Yosemite), we are no longer able to print inline PDF's using the pop-up Acrobat toolbar in Safari. If we click on the Print icon, nothing happens. Instead, we have to save the file using the Save icon in the pop-up toolbar, open the file in Acrobat and print from there, which is extremely tedious.

The systems have the latest version of Yosemite (10.10.3) and Acrobat XI is updated to 11.0.10. When I click on the Print icon in the pop-up toolbar, I get the following output from the console log...

5/11/15 8:51:29.112 PM PluginProcess[91362]: AdobePDFViewerNPAPI.dispatchEvent: exception '-[NSTaggedPointerString getCharacters:range:]: Range {0, 256} out of bounds; string length 4' thrown during event 'NSEvent: type=LMouseDown loc=(394,51) time=453088288.9 flags=0 win=0x0 winNum=191 ctxt=0x7fbf1057a640 evNum=261 click=1 buttonNumber=0 pressure=1 deviceID:0x0 subtype=0'

Does anyone have an idea what can be going on here?

Thanks in advance.