eek! You should read ScottGu’s post (for good details and history of the product) and the key to having a great experience in Silverlight and Visual Studio 2008:
“If you have the Beta2 or RC versions of the VS Tools for Silverlight, or the Silverlight 2 Beta SDK or Developer Editions of Silverlight 2, please make sure to uninstall these completely before downloading and installing today's release.”
Note: You need SP1 of Visual Studio and I verified that the install works cleanly on a new and previously SL Beta2 PC – with the uninstall.
Tim Heuer explain’s the “RC” tag on the download for the Silverlight Tools for Visual Studio 2008.
So here’s what I did…
As per Tim Heuer:
“Really as a developer using Visual Studio 2008, all you need to download is 2 things: Silverlight Tools for Visual Studio and the Blend 2 SP1 bits.”
I’d add the Deep Zoom Composer (version 0.9.000.5) for good measure!
P.S. I found the Q&A session from ScottGu’s teleconference for press types extremely valuable in answering questions floating around in my own head. Check it out.