a sticky post, because it removes some confusion. As of SVN revision 1465 the editor allows you to load and save .layout files everywhere you want to. Only the other resource types are still defaulted through the INI file.
Before this change, the confusion was that you could select any .layout file through the Open File dialog, but the editor would strip the path and load it from the default folder. This was a little weird, i know
I have a few bugfixed on my list, after which i'll make a new installer file.