SAP GUI 7.10 was instaled corectly but have a problem with export to EXCEL-Pivot table. After update GUI710_1-10002995 SAPlogon not started .Gui710_2-10002995 generate "This is an invalid SAP Frond end patch". SP1 on PC with Office XP working corectly.
the Excel Problem was solved with patch 1 (as you noticed).
- second, if it didn't work out, uninstall SAP GUI (using NWSapSetup.exe /uninstall) - reinstall the GUI - and apply patch 2.
Hope it helps, it should run, as I have the same config running smoothly.
uninstall and install GUi was help mee.