Wilco Feel there citation x - fsx. HDG reset question

Did not know where to ask this question Sorry if its in the wrong place. I went back to use the citation x for fsx . I have not used it in a whileWhen I align the nav system I get a big red X and the hdg failsI cant find any reference tot his failure and I certainly cant figure out how to resolve this failureAny ideas Hoping someone here remembers and can give me a hint. There is no support for this on the wilco site that I could find. Thank you Peter