Howdy,
Got a Nuvi 55 LM for Christmas. Downloaded Express for my PC. That went okay. What did not go okay was trying to update the unit.
The first time, the software part of the install hung at 50% and it then said "There was an error installing the update."
See attached.
Try number 2 mentioned that there was not enough space on the C: drive. It needed 185xxxKb and my hard drive only had 141xxx Kb. Mmkay, my C: drive has 792 Gb remaining. I never saw that error again.
Try 3-10 or so, it goes to "There was an error installing the update" after about 20 seconds.
I searched for a similar error and saw something about making sure that you are an admin on the PC. I am but I never saw that specific error.
Any ideas?