The "map not found" error is NOT what it seems. It points to a map.txt file that is useful for NavNGo programmers and for them only. That file is not produced by "cured" software.
First thing to do is to delete the save folder! Then try again and when IGO does not start try the next step.
IF I am correct, your Erisin is 800*480 resolution. Please check in data.zip/ui_igo8 if there is a 800_480 folder in it. Be careful opening the data.zip! When closed wrongly, the file may be corrupted. A safe solution is to open a copy of the zipped file on PC.