Windows 8.1 invalid class

[hotwires]

I attempted to install latest version of Unilogic on Windows 8.1 x64 OS. When I launch I get invalid class message, then nothing. Any suggestions?

[Joe Tauser]

I updated all my Win 8.x boxes to Win 10.  There is still a way to do that-

https://www.cnet.com/how-to/microsoft-windows-10-free-upgrade-offer-assistive-features/

I'm pretty sure you know this, but did you run the install program as Administrator?

Joe T.

[hotwires]

Yes, ran as administrator. Tried version 1.19.83_XP also, no avail. Thanks for the free Win10 upgrade link (I was not aware of that). Running 10 upgrade now. Might as well gear up for Win10, like it or not. 

[hotwires]

Success on Windows 10 home 64 bit. Not sure what official Windows 8 compatibility is, it failed for me. 

[Saragani]

Too bad you don't have a screen capture of the error message. I could have looked for it in google and try understanding why it happens.

 

Anyway, there were a lot of people in the past that installed UniLogic on Windows 8 and Windows 8.1. so it is probably something which is not installed, or has a corrupted installation, and it causes the Install script to fail.

[hotwires]

I did get photo of screen, to big to upload here. I have Nvidia Quadro K2000D video card, core i3 intel, 8GB, HP factory MoBo. MS updates where caught up. I tried several uninstalls and reinstalls of UniL. VisiL installed and ran okay. Perhaps a dependency issue like Saragani suggested.