> > Reading the source code, ClassesRoot is opened as writable – have you > tried just calling DeleteSubKeyTree on it? >
I have figured out what went wrong last week. I originally had a string of permission failures because I forgot to call OpenSubKey with writable: true. Once I fixed those stupid mistakes I hit another error on the HKCR root delete and I didn't read the message properly and assumed it was a permission failure. Today I see the message is: System.InvalidOperationException: Registry key has subkeys and recursive removes are not supported by this method. I had accidentally used DeleteSubKey instead of DeleteSubKey*Tree* and didn't read the error message. I blame intellisense first and me second. *Greg* P.S. I haven't done any COM work for 10 years and I forgot how messy it is. I confirmed today my old suspicion that a regasm for a simple C# class creates dozens of registry entries in different branches, and although an inverse /unregister does remove a lot of keys, it does not remove the typelib and interface keys. So a regasm slowly pollutes the registry, slightly, if that matters.
