Can't load unprotected PDF files on PRS-300
I just bought a PRS-300 and successfully loade a bunch of public domain ePUB books onto it using the Sony "Reader Library" software (running under Windows 7).
When I try to load PDF files however, I am getting the error message "there is no license to view on this device or it is authorized to another user", even though all of the content I am trying to load is unprotected (no DRM)! When I first tried to load unprotected PDFs on my PRS-300, I was prompted to register with Adobe. After doing so, the eReader Library still refuses to load the PDFs onto the PRS-300, displaying the error message in the original post. How can I get rid of it?