http://blog.csdn.net/backspace110/article/details/62111273
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 14
VisualStudioVersion = 14.0.25420.1
MinimumVisualStudioVersion = 10.0.40219.1
改成下面
Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
版本限制去掉