Originally committed to SVN as r5174.
https://connect.microsoft.com/VisualStudio/feedback/details/635294/using-absolute-path-in-clcompile-item-prevents-property-pages-from-showing Originally committed to SVN as r5160.
There is an odd bug/glitch where it is impossible to view property pages for single source files through the VS 2010 IDE, but compilation works as intended. Originally committed to SVN as r5157.