Unity Errors and Part Tools is blank?

[SpaceToad]

Hey guys. I'm trying to set up part tools to edit IVA's, but I'm getting these errors:

NullReferenceException: Object reference not set to an instance of an object
UrlDir+<get_AllConfigs>d__53.MoveNext ()
UrlDir+<GetConfigs>d__55.MoveNext ()
System.Collections.Generic.List`1[UrlDir+UrlConfig].AddEnumerable (IEnumerable`1 enumerable) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Collections.Generic/List.cs:128)
System.Collections.Generic.List`1[UrlDir+UrlConfig]..ctor (IEnumerable`1 collection) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Collections.Generic/List.cs:65)
KSPPartTools.GameDatabase.GetConfigs (System.String typeName)
KSPPartTools.PartToolsWindow.DrawSpaces ()
KSPPartTools.PartToolsWindow.OnGUI ()
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
 

I also get another issue, which is my Part Tools, after setting my GameData directory, just goes blank! Why? 

[nli2work]

probably a config file in GameData that parttools don't recognize. some Mods have their own config files that are also *.cfg. try a clean install and point parttools to that.

[SpaceToad]

3 hours ago, nli2work said:

probably a config file in GameData that parttools don't recognize. some Mods have their own config files that are also *.cfg. try a clean install and point parttools to that.

Okay, glad to hear its nothing too serious. Is there a way with Steam that I can have a second install? I also need to be able to use parttools with BahamutoD's MK22 and ASET Props/Avionics, as I am working on an IVA for that.

Edited May 21, 2016 by SpaceToad

[nli2work]

just copy KSP out from steamapps/common 

clear out all the mods, then point partTools to it, if everything is good, add the Mods you need one by one, refresh parttools after each to make sure everything's okay.

[SpaceToad]

Okay I have that all set up but the big question now is how do I save my prop arrangement once I have them how I like them?

[nli2work]

"Save to Config" button