SRB2DB Interface missing along with runtime error

[Varren]

I don't know if this happened recently or just now, but I can't even see SRB2 Doom Builder's interface, and when I load any wad I get greeted by a run-time error

Spoiler: Images

If you can't see the run-time error message it says "Run time error 381: Invalid Property or array index"

Anyone know how to fix this?

 

[tyrzi]

this is actually funny, not cuz you got that prob.

 

[Fawfulfan]

Are you using Vista or 7?

 

[MascaraSnake]

Are you using Vista or 7?

Isn't that quite obvious from the screenshot?

 

[Varren]

Are you using Vista or 7?

Windows 7, I ran as administrator and everything.