Hi guys,
I have had the same problem. In London. Three solutions:
The file which is responsible for that problem is: history.sav - you will find it in folder SAVE. Path's example: igo\save\profiles\01\history.sav
(If you use second profile for example for a car, it will by 02, instead 01)
First solution: delete file history.sav and replace it with original one if you have one (it has 1KB)
Second solution: delete SAVE folder. You will lost all settings, data, routes, used post codes, places where you been previously(after that you must configure you settings again...).
Third solution: reset to default inside the program. You will lost all settings as above.

I prefer first solution.

REMEMBER: before second and third solution always copy & save file: user.upoi which there are you favourites!!! And, if you want: cityhistory_v4.sav which there are post codes you ever used.

I use android version of iGO - 9.6.29.353462 and skin: GjAk_v1.10_AriNe-40

Hope, it helps.

Edit:
I forgot, WinCE has the same file's structure to our an issue, and you can use above solution.