The topic is still unresolved with the new PS CC 2019. Only the error message has changed to a simplified one like "could not open it".  Adobe, get your things done! If you need a sample image, let me know. ... View more

Same here:.ai and .psd files are associated with Adobe XD on (Win10). Can't change the default programm for opening those filetypes. ... View more

I've got the same Error Message on PS CC 2018 (MacOS HighSierra and Win10). To open & to save the affected images in MS Paint or something should not be the solution when using a commercial product like Photoshop. ... View more