After upgrading to win10, reinstalling stuff like (Microsoft) Visual Studio, the Gideros player stopped working. All the other exes worked fine. This happened in windows 10 home and pro.
I found that it was because of the QT 5.5 DLL files.
5.5 only had partial win10 support but 5.6 has full support.
I downloaded the latest QT 5.6 and copied over the new versions of the Qt*.dll files and now the Player works.
So, here's hoping the next release uses the upgraded QT 5.6.

Thanks,
Eric
Comments
Can you zip up the new dll files and put them somewhere so I can try it out?
https://deluxepixel.com
If nobody else has this issue then it might have just been a weird issue for me.
In any case, the comment about 5.6 still stands.
Attaching the 5.6 dlls I copied over in a zip.
1-Disconnect 2nd screen.
2-Run gideros player.(sometimes it is again not showing but showing in taskbar, solution is hover to the gideros player in taskbar wait 2 seconds for it to show gideros player and then rightclick on it and choose maximize. Later you can arrange the player's width and height)
3-Connect 2nd screen
This is still working for me even not a comfortable solution. And of course don't close gideros player
Just want to share it.
https://deluxepixel.com
Have also got something that matches that?
https://deluxepixel.com
https://github.com/gideros/gideros
https://www.youtube.com/c/JohnBlackburn1975
Sometimes in the GiderosPlayer config file (C:\Users\xxxxx\AppData\Roaming\GiderosMobile) the position has a large x value: e.g pos=@Point(2400 143).
Changing it to pos=@Point(400 143) fixes the issue for me.
https://deluxepixel.com
https://deluxepixel.com
https://github.com/gideros/gideros
https://www.youtube.com/c/JohnBlackburn1975