Same problem as the user above. Started happening yesterday as well.
SharePress Error: (#240) Requires a valid user is specified (either via the session or via the API parameter for specifying the user.;
Facebook added a new button to the primary person page i.e. Your Personal Facebook there is now a “Voice” button up beside where you can switch to you PAGE. If the voice button is set to post as Your Personal Facebook instead of your PAGE, the error is thrown. If it is set as you PAGE, it posts!
Thought this might be good info to have and maybe it could be overridden from your end?
same problem here. Not sure what SnipShopSave is referencing, I don’t see any voice button.
Best way I have made it pop up is to be on your personal page Tina Anderson. Type in the name of your page in the search box “Snip Shop Save” and then click on it. Once you do, beside your picture next to the search box at the top, it will give your name, then “voice”. Below that it will say “You are posting, commenting, and liking as Snip Shop Save — Change to Tina Anderson”. If it is set to post as your personal name, it will not give the correct authorization to facebook to allow sharepress to post for you. Confusing I know, but that is Facebook for you 🙂 Hope I didn’t confuse too bad.