I was getting this error “Unable to start Debugging. The SilverLight Developer Runtime Not Installed. Please Install a matching version.” when I tried running SilverLight applications. Then I tried to create a SilverLight project and still complaint that I do not have SilverLight installed. I found out that the SilverLight Developers is not automatically installed with Visual Studio 2010. To install SilverLight Developers please use this link http://go.microsoft.com/fwlink/?LinkID=188039 Once I installed it, I was able to run and create SilverLight projects with no problem.
“Unable to start Debugging. The SilverLight Developer Runtime Not Installed. Please Install a matching version.”
February 16, 2012 by shirinm
That link is for SL4 this issue also occurs with SL5 but can’t find a SL5 version of SL Developers.
I haven’t tried SL5 yet but try this link http://www.microsoft.com/en-us/download/details.aspx?id=28358
Yeah I have the tools and SDK installed, and those provide the unit testing stuff but no good for me. Thanks Though.