Been a while since anyone used SSM2007 instead of the new version, so it took a while before we realised that the GPS MAJ FUNC needed to be set to SM before you even could activate the SPEC 88 DISP.
Most of the background systems are simulated to a certain degree, but this one
seems to be a plain programming error
We hope to be able to add more functionality of any possible errors in the next version, but it will probably be in a future add-on for the new version.
But we can always start fixing this one.