Cant load plugins

So Im a long time Ableton and Cubase user but recently started a degree course in which we use Pro Tools for everything. I was given a Pro Tools plan, including 10,11 and 12 plus the value added effects bundle. Yesterday I went to install Pro Tools, went for version 12. After resolving some soundcard issues (required beta drivers from focusrite) I finally managed to get it loading a project for editing and playback was working. Today I got to the stage of needing to use some plugins for compression and EQ, none of the installed plugins would work, I could add them as an insert but couldnt load the actual GUI to use them. It keeps coming up with "Assertion error (abbreviated file location) on line 241", ive tried googling this with no results, have tried reinstalling pro tools and all the associated programs with no luck. So was hoping someone here may have an idea? When reinstalling I also found it wouldnt let me install to any harddrive other than my primary ssd, when it would be useful to use the 2nd as that has more space. Cheers in advance!

Edit: Im working on windows 7 home 64 bit with amd 8350 processor, intel ssd x2 and seagate barracuda 2tb internal and focusrite scarlett 18i6 soundcard

Cant load plugins