Hi Giovani,
Sorry for the extremely late reply, but I found this link while searching for a solution for another Discussion Forum
Uninstaller Error when trying to change National Instruments softwareHere is the solution for your problem (which I hope still doesn't exist):
Executable Version (7.1.1) Doesn't Match Resource File (7.1)Michael K. | Applications Engineer | National Instruments
| Michael K | Project Manager | LabVIEW R&D | National Instruments |