The latest version of the PSD Plugin can be downloaded from: https://www.psdplugin.com/
The latest version of the plugin is 2.5.0, released on September 11, 2016 for Paint.NET 4.0.11 and above.
Please don't hesitate to email me if you encounter a PSD file that the plugin cannot read! The more PSD files I can collect, the more corner cases can be worked out, and the more reliable the plugin will become. The PSD file format is complicated and incompletely documented, and is