- moved the 'brainexplode' state to the rocket, which is the actor which actually uses it.

This appears to be the only case where an actor was set to a state owned by a completely unrelated actor which would present some problems with state owner checking in AActor::SetState, so let's better get rid of it ASAP.
I believe the only reason this wasn't changed when all actors were exported 8 years ago was that old binary DEHSUPP lump.

src/scripting/decorate/thingdef_exp.cpp

@@ -476,6 +476,10 @@ static FxExpression *ParseExpression0 (FScanner &sc, PClassActor *cls)
 		{
 			exp = new FxRuntimeStateIndex(ParseExpressionM(sc, cls));
 		}
+		// The parsed expression is of type 'statelabel', but we want a real state here so we must convert it.
+		FArgumentList args;
+		args.Push(exp);
+		exp = new FxFunctionCall(NAME_ResolveState, NAME_None, args, sc);
 		sc.MustGetToken(')');
 		return exp;
 	}