How to convert a VS 2010 solution back to 2008

Question

We started using VS 2010 and were very happy with it, so we converted our project into a 2010 solution (still .net 3.5) and continued our development in 2010. However, we ar

Answer 1

as maZZoo tells, you have to replace those lines in .sln, but if you check you Output panel you may have an alert of using ToolsVersion="4.0", you have to replace that in the .csproj to: