Sorry – missed your initial post.

Also sorry in that I can't duplicate the problem – my unit works as expected. You are probably supposed to write an E-Mail to support. If they cannot duplicate it, your unit will have to come in for service.

Or, look for a workaround – might be cheaper and easier. Try setting the clock to int48 before you switch off the digin. You don't say which program you had loaded – this might be relevant.