Here's the deets:
I successfully installed OTA 4.1 a few days ago on my rooted MAXX HD. I was able to keep ROOT using Voodoo OTA Rootkeeper.
Everything was working great
I was in the play store uninstalling apps I never use......don't know why I wasn't using TiBu to uninstall apps
Came upon "Titanium Backup*Root" and "Titanium Backup Pro Key*Root"
Thinking I still have the free version after I purchased Pro Key, i.e, there are 2 version installed, I uninstalled "Titanium Backup*Root" (in Play Store mind you)
Realized that TB was gone, I DL-ed and installed TB again
Launched TB and the app now tells me "Root access Failed" at startup
I checked all my other apps like Adaway, Voodoo Rootkeeper and SU etc and they run fine
Ran Terminal Emulator and typed in "SU" and got the "#" so I know I still have root. I'm sure something happened during the uninstall process
Your help is appreciated.