I'm having the same issue on a mac. The workaround above is for a PC. Looking around on my system I found what looks like the garmin express map files here:
but unfortunately there is no gmapprom.img file. there is a GMAPPROM directory that contains: ---8<--- edp@squid$ ls GMAPPROM CYCLEMAP.MPS GARMINCY.MDR GARMINCY.SRT I0001DE1.TYP ---8<---
No GE still want to update but I’ve heard it’s fixed so I’ll try through GE tonight it turns out the the Dem and Geocode files were updated as well so I think the best plan is to wait until GE is fixed.