Hi Henrik,
Sorry for the bad user experience here. This is caused by a design oversight in the way that projects are being synchronised with Visual Studio. I hope to have a better solution to this soon ...
But meanwhile, create a file adjacent to your project file with a 'ncrunchproject' extension, for example:
MyProject.csproj
Should have the file:
MyProject.ncrunchproject
Inside this file, place the following XML:
<ProjectConfiguration>
<IgnoreThisComponentCompletely>true</IgnoreThisComponentCompletely>
</ProjectConfiguration>
NCrunch will then load this configuration when it initialises and it will know not to wait for VS to report the project.