Upgrade to 4.0 Framework, then downgraded, now can't find Linq namespace?

Posted by CubanX on Stack Overflow See other posts from Stack Overflow or by CubanX
Published on 2010-04-19T17:35:21Z Indexed on 2010/04/19 19:13 UTC
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.net-4.0

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upgrade

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LINQ

I just upgraded from VS2008 to VS2010. In the process, I allowed it to upgrade my DLL's to 4.0. I've decided that wasn't a good idea and now I've rolled back.

It all works fine in VS2010, but when it hits my CI server (CruiseControl.Net), I get an error of:

The type or namespace name 'Linq' does not exist in the namespace 'System' (are you missing an assembly reference?

3.5 is on the server, and other projects that use 3.5 build fine, so I don't think it's a framework issue.

Anyone have any hints?

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