When I look in my log file for my software I see a few lines that mention something similar to "Exception in RecentFilesListManagerSettingsFile.Save: UnauthorizedAccessException: Access to the path
"C:\Users\<UserName>\AppData\Local\Bentley\WaterCAD\8\Haestad.Framework.Application.RecentFilesListManager.xml' is denied.:
There are setting on your computer that may prevent the sofware from accessing files in potentially protected file locations.
The steps below use WaterGEMS as an example but, this may be used on any program.
Close the software
Locate the icon on the WaterGEMS desktop and right click on then select "Run as administrator".