Plug-ins not loading into "

[Mackatunes]

Hi all, can't seem to get checksum plugins to install successfully into TP
Loaded checksum plugins .dll into <documents>\tunerpro files\plugins\ as mentioned in TP install notes.

2005 VZ SS Commodore 5.7l Ls1 gen3 6speed manual (Aussie)
OS 12592433
System 29727123024

*Tuner pro rt (not registered yet)
*Captured bin file from my vehicle on pchammer,
*Found an 12594233 xdf file...12592433-metric and can see all parameters.
*Attempted to change one setting to test if edit will be successful when saved...failed with missing checksum error
*Checked what plugins are loaded on TP by looking in Help/plugins
*I can see it has the TPMoatesemulator and elm327 plugins installed already from initial install
*Went to jokeoy link on tp upload page and got his Gm-PO1-P50-checksum plugin
*Loaded to <documents>\tunerpro files\plugins\ folder on my pc
*Restarted TP
*Checked in Help/Plug-ins to see if it was there...Fail

All files (XDF and plugins) are in main tuner pro directory...plugin is in right folder but not showing up when checking in tuner pro
Don't usually ask for help but have tried numerous different plugins, I'm stumped.
I missing something here?

Cheers