Getting error: ArgumentException: Destination array is not long enough to copy all the items in the collection. Check array index and length.

When I was importing a terrain created in World Machine saved as output.r16, I found this error as i was following a tutorial to import terrain:
ArgumentException: Destination array is not long enough to copy all the items in the collection. Check array index and length.

Tutorial: https://www.youtube.com/watch?v=w9_72AkVSIo

Terrain file: [91059-new-compressed-zipped-folder.zip|91059]

Concerned screenshot:

Notify me for further screenshots if required, and thanks in advance.

Did you ever find an answer to this issue, I am running into the same thing but with importing 16 bit raw grey scale files. Can only import as 8 bit. @Ab30657

i had same issue it was because of playerprefs i assigned an if statement for an int playerprefs that doesn’t have any values.