While trying to compile on a share (with all permissions) I got an error message concerning the opening of a '.rsp' file. After a bit of search it turns out to be a known issue.
To fix it, simply redirect temporary files to a local directory, such as:
$(temp)\$(ProjectName)\$(ConfigurationName)
(setting in Configuration Properties -> General, Intermediate Directory)
More info on
http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=101276
