I generated and installed the product after your first post - still I find it dubious to explicitly link to a outdated installation guide in the customer area. If you don't want to update it, just remove it, then people will know they have to look in the package.
Everything is fine except for the collapse buttons. I just triple checked my paths in "PhotoPost Integration Administration", all correct. Now since you sent me to forum settings - indeed there was a wrong path. May I ask why I need to enter the same path at two different locations? What's the difference between the settings, or are they indeed redundant?