Sorry for the troubles.
To be honest: I have no idea...
Problem is: I'm not able (as I wrote on the website) to test the version for the PRS650. I'll have a look on this version in the evening and will compile it once more and activate the download again (deactivated now).
Inbetween use the
Uninstaller.
Uninstall current version and install the normal version again. This should help.
A.
PS:
Uninstalling PRS+ is not possible with deleting everything visible on your reader. PRS+ is mainly situated in the invisble internal memory of the reader. To uninstall it use mentioned uninstaller or use the less brute method:
Extract the ZIP-file (say from ZORK-edition) as usual, open the folder and you'll find a file named installer.sh. Open it with an editor (say the normal texteditor in WIN) and read the short explanation. Put a '#' in fromt of the right line (explanation inside) and copy the installer-folder (as usual) onto your reader. Restart. With this '#' you convert the installer into an uninstaller.
PPS:
New version online!