Trying to open a PDF attachment in stock email app and it calls up the Xtralogic Remote Desktop app which proceeds to generate an error that it failed to open the Remote Assistance invitation. I have/had several PDF viewers installed as I was trying them out, including Adobe's. I uninstalled and reinstalled, no change. Also went into app settings and it states that no defaults are set. Of course if the email app could save the file, I could probably figure out how to open it that way...