BP Sandboxes caused a crash today.
Im playing Pyanodons mods with a bunch of additional QOL.

See here for Log-file, Dumpm Errormessage & Modlist:

[LINK REMOVED]

Please give me quick feedback, when I can take down the link.

Can add some detail:
The Crash happens when you cut/copy a tailingspond (BIG TANK) and place it afterwards.

I have downloaded the files, and will try to reproduce this.

Thanks!
If I can do anything else, please let me know!

So, I can't seem to reproduce this - is it still happening to you? And if so, can you provide a save plus instructions on how to trigger it? In any case, based on the image in your files, the error actually comes from Py Coal Processing.