Requirements for M-Files Icons

Hi,

is there a document or anything, which describes the requirements for M-Files icons?

I haven't found one yet and I always get an error like

"PropertySheetDocumentVault.cpp, 2652, Falscher Parameter. (0x80070057)
IconHelper.cpp, 2090, Falscher Parameter. (0x80070057)
IconHelper.cpp, 2140, Falscher Parameter. (0x80070057)
IconHelper.cpp, 2168, Falscher Parameter. (0x80070057)
(M-Files 23.9.12966.6 2023-10-10T09:40:49.007Z)"

if I try to set a user created icon.

Thanks in advance.

Kind regrads