I downloaded the one month version from Handmark on Jan. 18th to my BB 8830. It worked absolutely fine up until about two weeks, and now the program is having trouble accessing the GPS in the BB. My manager at work has the same BB also on the US Cellular network, and he is having the exact same issue. We know it isn't the GPS unit in the BB because BB Maps and Google Maps work just fine. I have contacted Handmark and they are trying to get in contact with Trimble about this issue.