I have an ASP MVC2 web project that I developed using VS2008. I recently upgrade to VS2010. I went through the upgrade wizard the first time I open the project in VS2010. When I came to the "Do you want to convert this site to use .net framework version 4" question I answered "no". This is because I wanted to build against .net 3.5 so that I know I can deploy to the production servers without needing to upgrade them to .net 4 first. It works fine locally (and is still targetting .net 3.5) but when I try to build it using the command line invocation of msbuild that our build script uses I get the following error:vbc : Command line error BC2026: warning number '42353' for the option 'nowarn' is either not configurable or not validvbc : Command line error BC2026: warning number '42354' for the option 'nowarn' is either not configurable or not validvbc : Command line error BC2026: warning number '42355' for the option 'nowarn' is either not configurable or not validIs there some new version of msbuild for 3.5 which understands these warning codes? Yes, I can just remove the three codes from the .vbproj file, but I still count this as a bug - when I answered "no" to the upgrade question I expected to be able to build the project using the .net 3.5 msbuild that I have always used.The msbuild there reports itself as "Microsoft (R) Build Engine Version 3.5.30729.1". On my development machine it reports as "Microsoft (R) Build Engine Version 3.5.30729.4926" so there is a difference there, but I woldn't have expected it to be a problem like this given it's the build number only that changes - or?My development machine is Windows 7 while the build machine (and production machine) is Server 2008.
Visual Studio/Silverlight/Tooling version
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