Virtual

Is anyone else seeing this issue with their navi after installing a backup camera and Dom's PNP module?
When starting the car the navigation screen reports "PC card slot is open please check system" after a few seconds this goes away and the normal warning message comes up followed by the OK button and the navi operates as normal. It doesn't look like it's terminal, but it is annoying.
Any idea's on what could cause this would be appreciated (before I rip out all the trunk trim to start unplugging things).

Virtual

So after posting the question above I then found the right combination of search words to find the answer. So this thread can be closed.
For those interested, the navi dvd player has a pc card slot with a small sliding door and I must have moved it slightly during the final install. I opened and closed the PC card door and now the error message is gone.