What has happened is that the PowerDesk 5 Free installer does not currently check for an already installed version of the Pro version. Therefore the Pro version gets over-written with the PowerDesk 5 Free components. 

To correct this: 
1. Uninstall PowerDesk 5 Free from the Add/Remove Programs tool in the Windows Control Panel. 
2. Reboot and delete the C:\Program Files\VCom\PowerDesk folder. 
3. Reinstall PowerDesk Pro 5 using the original file or CD-ROM.