Uninstall RDPlus
Follow these steps :
Delete the C:\wsession and C:\Program Files (x86)\RDPlus folder and try again.
If this does not work then follow this procedure :
- Open a control panel and manually uninstall the Universal printer.
- Make sure no users are connected, then uninstall RDPlus, reboot your computer.
If these steps did not work then download and install a fresh setup before restarting above procedure :
https://rdplus.com.au/download/
I recommended you also to deactivate your antivirus before installing/uninstalling RDPlus