Print Plugin for iPF6400 and PhotoShop stopped working together

[johnhennessy]

Today my Print Plugin for iPF6400 and PhotoShop 2026 stopped working together. It did work last week or so and for many years before that. The error message says it is not installed correctly or not at all. Any ideas on how to fix that? I don't remember how I installed it; it has been so long.

My 6400 works like a charm since it was new. 

Thanks.

[Danny]

Thanks for joining the conversation, johnhennessy!

So that the Community can help you better, we need to know exactly which operating system is running on your computer (i.e. Windows or macOS, and which version thereof). That, and any other details you'd like to give will help the Community better understand your issue!

If this is a time-sensitive matter, click HERE search our knowledge base or find additional support options HERE.

Thanks and have a great day!

[johnhennessy]

Good point, I have Windows 11 version 25H2. I think the Print Plugin for iPF6400 has worked since that update. So Windows may not be a factor. It is a Photoshop update that may be the problem. How can I revert to a prior PS update to test that theory?