Jerry, when GPS is disabled on a tablet, iFly will pop up a window after about 30 seconds of start up telling you that your GPS is not enabled. The window offers to enable it for you. (By taking you to Settings.)
You didn't say that you got that message. It might help Brian to troubleshoot if you can confirm that you are NOT getting a message from iFly about your GPS being off-line.
(Brian, if he's not getting that message, then iFly thinks his GPS is working. If his GPS is working but he's not getting a signal, then it sounds more like a problem witih the tablet, where CPU noise is blocking the GPS from acquiring.)