Describe the bug

I downloaded 3.8.0 from smapi.io today to play with the updated Stardew Valley 1.5. However, every time I tried to launch it from Steam, Steam gave an error about a missing executable. I noticed when I manually installed SMAPI and just watched my SDV install folder, the SMAPI executable disappeared after a few seconds. I checked Windows security and found this:

I don't know if this is just Windows 10 being overzealous, but I haven't had this problem with SMAPI before, through multiple versions. Maybe something is wrong with the executable?

To Reproduce

Do a direct download from smapi.io of SMAPI 3.8.0. Install on Windows 10. Wait and the executable disappears. Check Action Center in Windows to see if Windows determined it a threat.

Log file

There's no ErrorLogs directory in my %appdata%\StardewValley after updating Stardew Valley to 1.5, so I can't find SMAPI's log file.

Trying to download from Nexus Mods instead of directly, Edge won't even let me download it:

Hi! That's normal when the update is still new. See SMAPI files disappear or antivirus complains in the troubleshooting guide for more info about why that happens, how to check if it's safe, and how to install it when that happens.

Thank you!