Find in Files is totally broken for me in Xamarin Studio Mac (OSX El Capitan, Xamarin Studio 126.96.36.199). I have seen other threads on this, but they seem to have been resolved? This is still 100% broken for me. See attached screenshot for a trivial search. You will see the matching text directly above the dialog, with no results found. The same thing happens searching in either entire solution, just the project, or all open files. However, "Current Document" does return correct results (which doesn't help much for a find in files search). This seems like a pretty fundamental problem. Is this a known issue?