Do you have any old version Aruba VIA installed on your Windows PC, if YES uninstall and try again and also check if drivers of your PC is up to date, I see below message in log
Jul 23 09:40:27.721 p4472 t260c ERROR aninsthelper 394 unabel to get the Adapter ((null)), close and exit 0
Jul 23 09:40:27.722 p4472 t260c INFO aninsthelper 1665 ANGetVADriverVersion returned 8, version=
Jul 23 09:40:27.722 p4472 t260c INFO aninsthelper 1668 VA Driver needs to be installed/upgraded
Jul 23 09:40:27.722 p4472 t260c INFO aninsthelper 712 ANVaInstall enter
Jul 23 09:40:27.722 p4472 t260c INFO aninsthelper 597 GetServiceInfPath return C:\Program Files\Aruba Networks\Virtual Internet Agent\\arubavnic.inf
Jul 23 09:40:27.732 p4472 t260c INFO anvainstall 31 InfPath C:\Program Files\Aruba Networks\Virtual Internet Agent\arubavnic.inf