Error in validObject(object = .Object) : invalid class “Seurat” object: 'assays' must be a named list

[PietroAndrei]

Hi,

I am trying to create a new S4 object class that contains all the slots already defined for a Seurat object, plus an additional slot.

NewClass <- setClass(
  Class = "NewClass",
  contains="Seurat",
  slots = c(
    "newslot" = c(NULL,"list")
  )
) -> NewClass

The problem is that when I try to convert any seurat object to the new class

as(seurat,'NewClass')

I got the following error message

Error in validObject(object = .Object) : 
  invalid class “Seurat” object: 'assays' must be a named list

Any idea on how to fix this issue?
I am currently using Seurat 5.1.0 and SeuratObject 5.0.2.

Thank you!

Pietro

[renyzh5-2]

I met the same problem!