The content of the error report is：Unsupported color mode for PattResource.
Can you please share source file along with sample code and version which you are using on your end so that we may further investigate to help you out.
I want to do that, but I can’t. Because this PSD file is too big to upload.
My code :
using (PsdImage image = (PsdImage)Image.Load(sourceFileName, loadOptions))
I have observed your comments and like to inform that you may upload on Dropbox and share link here with us. We will further investigate to help you out.
PsdTest.zip (2.4 MB)
I give a failed example project to you ,I hope you can give me a help,thanks