Q:

Windows Phone 7 SDK and Visual Studio 2010 RTM

Hmmm, wonder if I have the first VS 2010 RTM question?  Anyway..
Installing the Windows Phone 7 SDK I get the following error
Incompatible Products
VC 10.0 Runtime
.NET Framework 4 Multi-Targeting Pack
Microsoft. NET Framework 4 Client Profile
Microsoft .NET Framework 4 Extended

This was reported as an issue with Beta 2 and the fix was to install the RC.  Anyone know why it's incompatible with the RTM?  Will we have to wait for an update to the SDK? 
Regards,
Alex..

A:

It's because Windows Phone 7 dev is incompatible with the VS 2010 RTM.  I just made the same upsetting discovery. 
You can register to be emailed when they release a compatible one here
Official story here. 

A:

Hey guys, I am Director of Developer Experience on Windows Phone 7.   This error is in fact an issue with customers who have installed VS2010 RTM.   If you haven't installed VS2010 RTM, you are unaffected.   Once you install VS2010 RTM, you cannot install the Express SKU of the Phone tools. 
We should have a refresh of the Windows Phone Developer Tools shortly which will fix this issue, as well as add a few updates.   I will update this answer when we post the updated tools, but should anyone have questions, I am on twitter @brandonwatson. 
UPDATE: the tools are live - if you have final build of VS2010, go here:
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=cabcd5ed-7dfc-4731-9d7e-3220603cad14

