Hi, I'm wondering if it's a virus.
Here's a link to where it's talked about on the autodesk forums (its mentioned in many other places):
https://forums.autodesk.com/t5/3ds-max-programming/is-this-an-alc-virus-in-max/td-p/7991084
The ALC Betavirus has these effects:
Crashes or fails to open Corrupted scene data Empty helper nodes (¡¡×ý×û and ×þ×ü) Unable to save the scene manually Unable to use the Undo function Displays various MaxScript errors Corrupts or removes cameras, lights, and/or materials Forces an auto-save after breaking the scene or when choosing "Don't Save" when closing Adds itself to an existing script in the MaxScript startup directory Force closes 3Ds Max Unable to save V-Ray lights
The CRP Bscript virus has these effects:
Undo function is broken and no longer works after switching to different viewports Scene lights may disappear or be deleted Scene materials may deleted Damage scripts in MaxScript startup folder
The ALC 3 Alpha virus does this:
Crash 3Ds Max when open Empty helper nodes Unable to use the Undo function Displays various MaxScript errors Change render settings (V-Ray): VFB size, materials, GI settings etc. Tiny save your render from VFB and send to remote e-mail Gather system information and send to remote e-mail: IP, MAC, HDD info, Memory, CPU, 3Ds Max version etc. Send gathered data from fake e-mail sss777_2000@126.com (nfkxovtedspjgedv) to rrr888_3000@126.com Download from remote address and update itself from http://www.maxscript.cc/update/upscript.mse
One of the solutions is to download the prunescene script and install it in max. It's here:
https://3dground.net/manual/prune-scene
Seems like it could be one of these to me. Maybe I'm wrong, but I thought it could be a possibility.
Best, Tom