Clicked on cfgtool.exe.
"There is already a Sim Connect file in your FSX directory but the file is invalid and cannot be deleted. Aborting!"
The SimConnect zip file contains 2 files: Setup.exe and SimConnectConfigTool.msi.
The unzipped file contains 3 items: app.ico, cfgtool.exe, SimConnect.sample.
I can only find 1 file in the FSX folder that might be related to this problem: In the Uires subfolder: SimConnectMenuBB.xzp