bbhou-
There are a lot of factors that determine how the GPS acquires, even though you were able to get the 1st GPS to acquire in the building, it may not happen every time, where the satellites are in the sky is a major factor. So, we would recommend that you try to get a GPS signal outside. Also the first time that the GPS tries to acquire it may take several minutes as the GPS figures out that it is in TX.
Regarding the turn into your work, how far from the road was the lat/lon that you typed in? The software may just have said arrive at finish, rather than telling you to turn, especially if there is no entrance road in our data to your work location.