Could not complete your request because the layer is not a valid text layer

[eliaschavera]

I get this error:
Could not complete your request because the layer is not a valid text layer
when trying to open certain PSD files. They open fine on a different pc.

 

[carnageX]

What version of PhotoShop are you running?

Do you have the specified font installed on the machine your'e receiving the error?

 

[aidenburke]

Try drag and dropping the image in a web browser.
After the browser opens the image, right click and save the image.
Then try opening it in Photoshop.
Another method:
You said that you can open it in paint.NET, you can open the image in paint.NET and do save as...and save it as a new file.
Then try opening that new file in Photoshop.
Last one solution to apply https://forums.adobe.com/message/6771439

 

[carnageX]

^ OP never said it opened in Paint.NET...not sure where you got that from. He said it works on another machine but not his machine.

 

[cb600fshornet]

That's because his answer was copied and pasted from here:
How to fix an image that doesn't open in Photoshop, even though it opens fine in a browser? - Super User