Ctrl+Z (Undo) Crashing Max

[dj_buckley]

Has anyone experienced Ctrl+Z or Undo in general consistenly crashing their scenes?  I'm in Max 2024 and Corona 11 - pretty sure it's a Max issue though.

But I'll start a new scene and everything works fine for a while.  Then (randomly) Ctrl+Z will crash Max, and from this point, any instance of Ctrl+Z in that scene results in a crash.  The rest of the scene works fine but once I've had that initial crash - Ctrl+Z becomes a no go zone.  It's driving me insane.

[maru]

You can capture a minidump from the crash and send it to us. We may be able to tell you what the culprit is (it could be Corona, 3ds Max, 3rd party plugin, or something else).
https://support.chaos.com/hc/en-us/articles/4649117083409-How-to-report-issues-3ds-Max

[Aram Avetisyan]

Has anyone experienced Ctrl+Z or Undo in general consistenly crashing their scenes?  I'm in Max 2024 and Corona 11 - pretty sure it's a Max issue though.

But I'll start a new scene and everything works fine for a while.  Then (randomly) Ctrl+Z will crash Max, and from this point, any instance of Ctrl+Z in that scene results in a crash.  The rest of the scene works fine but once I've had that initial crash - Ctrl+Z becomes a no go zone.  It's driving me insane.

Hi,

This seems to be the known behavior of the malware found in the scene.
Press H and check if there are any objects (they are usually empty) with strange names (the ones I am aware of were Chinese).
If you found any, deleting them will not work - you will need you download and install [urlhttps://apps.autodesk.com/3DSMAX/en/Detail/Index?id=7342616782204846316&appLang=en&os=Win64]Scene Security tools[/url], then reopen the scene.
It will automatically detect the malware and delete it. Afterwards, you can locate and delete the objects with strange names.

[dj_buckley]

Hi Aram

If I'm not mistaken, isn't that script a default part of the Max install these days?

[Aram Avetisyan]

Not quite, as it is a separate plugin which also received updates. I am not sure how the installation was done on your side though.

Just search in Add or Remove programs (installed apps on windows 11) for 3ds Max Scene Security tools.
If it appears, you have them, if it doesn't, you don't.

[dj_buckley]

"The 3ds Max Security Tools are installed by default in recent copies of 3ds Max, and updated versions are available directly from the Autodesk App store. To make sure the Security Tools are active, do the following: In 3ds Max, go to Customize > 3ds Max Security Tools. Make sure the Enable Protection button is checked."

The page you linked too also shows the same screenshot I attached, but it demonstrates that it'll automatically tell you if an update is needed.  Either way I installed the latest one and reopened the scene.  Nothing happened.

I'll make it happen shortly and upload the mini dump

[dj_buckley]

Hopefully the attached help.  The report summary suggests its a Corona issue

[Avi]

Hi, can you try to repro it with other renderers such as Arnold, V-Ray or scanline so we can be sure that it's a Corona specific issue only and not 3ds Max.

[dj_buckley]

Does the mini dump not reveal anything?  Also the report explicitly states the Corona DLL that caused the crash no?

I'll give Scanline/Arnold a go, but as I say, as with most of the bugs I find, they're very temperamental and random.  I'll see what I can do.

[Avi]

Hi,

The minidump tells us what has crashed but we don't know what exactly triggered the crash. So, we would need the scene file with the repro steps so we can check if only Corona is crashing, or all render engines are crashing.

You can start a ticket and send us the scene file, minidump + repro steps here: https://support.chaos.com/hc/en-us/requests/new