[Solved] 4.1.7 still does not work in Vista

Hi, I'm a newbie. I just bought TLB 4.1. It seems promising. I'm using it on Vista Hm Prem. I am able to run it as a toolbar, but I can't get it to act as a QuickLaunch replacement on the Windows Task Bar. If I right-click the Task Bar and go to the toolbars submenu, "True Launch Bar..." is on the list, and it is not greyed-out, but I cannot select it. Which is to say that even if I click it, it is still unchecked. Iv'e tried with the Task Bar locked and unlocked. I checked the troubleshooting part of the help file and went to
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
I did not see:
NoSaveSettings
NoCloseDragDropBands
NoMovingBands
but there was a DiscSpace Check one that I set to zero, then restarted my PC. Did not help. I couldn't try the reg file above, or view the linked discussion because my login credentials won't let me access them...
Are there any other things I can try? Thanks. -steve