A: The data file is too large to bring in through the ODBC connection through the current executable file that you are running. You can run the higher executable files which can be found in the installation directory, i.e. C:\Program Files (x86)\ioAnalytics\ioGAS\, and are called ioGAS-3.exe and ioGAS-4.exe. If you are running ioGAS 64-bit version, the higher executable file is called ioGAS 64-6.
This document provides more details on how many rows and cells each of these higher executable files can support: http://iogas.net/wp-content/uploads/2012/05/Data-Handling-Limits.pdf