- Selection works.
- Viewports work.
- Browsers work.
- UScript Editor works.
- Dialogs work.
- Texture properties window works.
The dialog that controls Advanced Options and Actor Properties as well as Texture Properties will get confused and reset themselves when you select actors in the level or select different textures in the browser. Be sure to only have one such dialog open at a time to avoid oddities.
Also everytime the editor is run, the viewports will be undocked and strewn all over the place. Selecting "Reset all" will fix this.
You need to install native visual basic 5 runtimes and such to even run the editor in the first place. Do not forget to run UnrealEdFix4 either.