Editor doesn't remember external script editor?

I set gvim to run my scripts with the arguments `--remote-silent +$(Line) "$(File)"` but everytime an assembly reload happens or I exit out/ enter Unity, it resets the script editor to be `UnityVS.OpenFile` - Same thing if I set it to MonoDev, doesn't remember it either. What am I missing? Is there something else I should do when setting the script editor? Thanks! ([forums crosslink][1]) [1]: http://forum.unity3d.com/threads/frustrating-editor-doesnt-save-my-external-script-editor-preferences.319803/