Error message in Visual Studio 2010 with Studio 2014 SDK

Hi, 

I set up a SDL Studio plug-in using the Studio 2014 SDK and Visual Studio 2010. 

Every time I build the project, I get the following error message: 

Error 1 The process cannot access the file 'C:\Users\[USER]\AppData\Roaming\SDL\SDL Trados Studio\11\Plugins\Packages\plugin.sdlplugin' because it is being used by another process. 

VS runs under admin privileges. I guess that there is a custom MSBUILD task that causes this issue but I'm not sure.

Does anyone know how to solve it?  

Thanks, 

Christopher