Hi @Ravenfyre , I encountered the same problem. It started around two weeks ago (until then it worked perfectly), so i thought it was some temporary error. But it still is not working and I see someone has the same problem, so I will try to add some more insight on it.
As the @N80926 , the problem is when I am launching game WITH mods, the loading button goes animating infinitely, never stops or pop error screen. But the game won’t start, even the launcher is not starting (I tested Rockstar launcher and Steam). I have to manually close the app. It even asks me, if I want to close the app when there are mods currently running (screenshots), which is not true
, I include screenshots from Kaspersky and Windows Defender exclusions, but I don’t think it is caused by antivirus, because even deactivating both antivirus software haven’t solved the problem.
When I launch the game without mods with WeMod, the game launches correctly.
I have logs from few games I have currently installed - Police Simulator: Patrol officer (Steam) - I have logs when launching with and without mods.
Hogwarts Legacy (Steam - launching with mods)
GTA V (R* launcher - launching with mods)
Please help us, I love WeMod and this is very annoying 
Screenshots:
Logs:
GTAV_rockstarlauncher_withMODS.log (23.8 KB)
HogwartsLegacy_withMODS.log (24.0 KB)
PoliceSimulator_withMODS.log (22.5 KB)
PoliceSimulator_withoutMODS.log (22.3 KB)
Thank you very much in forward and hope we get this working again!
@ladisnek
EDIT:
Same as @N80926 I have zero sized trainers in download folder:

EDIT 2:
Tried adding exclusion in Windows Firewall for both incoming and outgoing traffic, but doesn’t changed anything.
EDIT 3:
Just to be sure, all the games are bought through official channels. Not pirated.
EDIT 4:
I went brutal and unistalled WeMod, deleted Local and Roaming App folders of WeMod, then I deleted every Registry key and folder containing “WeMod” and installed fresh install of WeMod. But nothing happened, even if I whitelisted WeMod in firewall, deativated antivirus and performed completely clean install, it doesn’t work.