On the 15 August 2019 Windows released an update that cause run time error 5 when trying to download application via U90Ladder.
Since then, they have released a fix for windows 7 and 10:
The relevant update for windows 7 is KB4512506.
The update to fix this issue (kb4517297)
Please see below link to Microsoft update and known issues:
Windows 10, version 1903
Windows 10, version 1809
Article can be found in the below link: