The exception indicates that Csla is already referenced in the project.
Are you sure you have the exact same Csla.dll referenced in your project as you do in the VS Toolbox? Same dll, from the same location? Not one release the other debug or anything like that.
I seem to recall that the Windows Forms designer is really picky about some of those things, especially if you have any usercontrol or other control types in your actual project that subclass or use Csla.dll.
No, I don't. Looks like I'll need to figure out how to get .Net to trust my R: drive, which is a network driver where the release csla is kept.
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