I'm getting the same error message. I did what you mentioned: reinstalled package manager with quick install 2.82 (it has two little pluses ( ++ ) next to it, what does that mean?), restarted luna, and reinstalled preware. No luck
im a developer and recently i've been having the problem that when i try to run one of my apps on the device via eclipse the phone freezes and the build prozess gets stuck at 50%. Could this be due to me having the package manager installed on my pre?