If I'm not mistaken, your I-Blue 747 GPS unit is internally identical to the QStarz BT-Q1000X. I used the QStarz unit for several years and lost it this past week either in Africa or on the flight home. Grrr. Now I'm out looking for another one.
I ran into the same software problem with Google's API and found that QStarz Qtravel software works just fine with it. Perhaps it will help you as well. You can find it at www[dot]qstarz[dot]com. Select "GPS Travel Recorder" and "BT-Q1000X", download and install the latest version (QTravel v1.46 for Win XP / Vista / 7 (x86/x64)). They have a FAQ that addresses this problem. They also have a facebook group. Perhaps they could help if the API error continues.
Failing that, I've found that GPSBabel works to extract data from it, and supposedly GPicSync works well with it too.
BTW - I'm thinking of getting the i-Blue 747. What's the battery life like? The QStarz unit I had could easily handle over 24 hrs. I think the docs say closer to 42 hrs.