Here’s a message I’m getting:
Other users with similar problems relating to registry cleaners: http://answers.microsoft.com/en-us/windows/forum/windows_vista-hardware/unable-to-start-bluetooth-stack-services/a1bb71db-38be-498c-ae0a-86261fef4406
From the information you have given I am not clear whether this is a bug/issue.
For the moment I will transfer you to help so you can work through this issue with users and mods in this forum and hopefully resolve it. I hope that is OK.
Please ask any mod to move this report back to the bugs forum if it becomes clear that it is a bug/issue.
Best wishes
Mouse