1: connected to pc deleted all "my Flash disk" files.
2: Soft reset.
3: connected to pc (in screen calibration mode) deleted "config.sys" from "my flash disk".
4: Copied everything from my flash disk archive on pc and pasted in "my flash disk" on pna.
5: completed screen calibration.
6 Turned off, turned back on (by reboot you mean off on, not hard or soft reset?) "message application not installed please insert sd/mmc card and click OK".
7: inserted 2gb card with IGO and 1 map in, turned off, turned back on.
8: "message application not installed please insert sd/mmc card and click OK". Clicked OK
9: Then received the message I know so well.