That error is not coming directly from TestComplete. TestComplete, for languages like JavaScript, JScript, and others, uses scripting engines external of the TestComplete environment to process and execute scripts. So, the error is coming from the engine that TestComplete uses to run JScript which, if my Google searches are correct, appear to be something dealing with Java or a similar engine. Specifically, your workstations security settings are too restrictive to create the necessary objects. While you're not using IE, you should check to make sure that your IE security settings allow "unsafe" ActiveX objects and so forth.
That's my best guess and a good starting point.
