We have moved a Visual Studio 2008 project (containing a few web parts) from MOSS 2007 to a SP 2010 server.
When we try to load the project in Visual Studio 2008 on the SP 2010 server we see:
"The project file xxx cannot be opened. The project type is not supported by this installation".
Ok - we then remembered that VSeWSS 1.3 was installed on the MOSS 2007 server when the project was created.
Trying to install VSeWSS 1.3 on the SP 2010 server we see:
"This product can only be installed if WSS 3.0 has been installed first".
Must we install VS 2010 on the SP 2010 server and then convert all VS 2008 projects to VS 2010?
Can we (for a while) install solutions (on the SP 2010 server) developed in VS 2008 on MOSS 2007 server?
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