I had a problem where I installed a fresh copy of windows 7 and tried to install QTTabars 1038 and it didn't work. The dlls weren't running like they were suppose to. This was really frustrating and I found the solution. What you'll need:
1. install 1038
2. install 1.5.0 beta 2
3. Right-click on the toolbar and theres something called QTTASK or something like that, its that the very bottom of the list, make sure thats checked
4. uninstall 1.5.0 beta 2
5. install 1038 again.
6. Everything should work fine now.
Checking QTTASK enables 1038 and there is something that 1.5.0 beta 2 does that 1038 needs, not sure what but it works.
On my particular PC, even when I enabled 1038, The command bar wouldn't show for some reason. But problem solved and I hope this helps someone.