[amdini]

Thanks for the tips cwsand.

Fortunately, after about a week of trying different things, I got v10 working again by doing the following:

1.) Full uninstall of PT10, including HD drivers and all settings/profiles.

2.) Full uninstall of all RTAS plug-ins, including air virtual instruments collection. (Turns out the AAX plugs were not the issue, but all the dpm and rsr style plugs had to be uninstalled (not just moved).

3.) Full reinstall of PT10.

4.) Full reinstall of all RTAS plug-ins.

5.) Full update of all reinstalled RTAS plug-ins.

*Make sure to reboot between each step.

Recap:
It seems, this particular access violation error, for whatever reason, was a result of all my RTAS plugins in PT10 becoming corrupt after installing the latest version of PT11.

Key point in solving:
Simply updating the plug-ins did NOT work for me.
I had to clean uninstall all my RTAS plugs, then reinstall them, and the finally, update them.

Luckily, the steps above solved my problem. I did not end up having to check memory, run defrag, discheck, reformat my OS, or do a full clean and reinstall of 11 either.
I will, however, make a restore point now that everything is playing nice!