Hi Rizla
Sorry if your problems are caused by the new ZORK. Sadly, as written, I'm not able to test the version for PRS650 du to lack of this erader.
Do not worry!
1) Uninstall PRS+ with the
uninstaller
2) Install the 'normal' PRS+ again
3) Reinstall the old ZORK
This should solve your problem. Meanwhile I've removed the downloads.
A.