I am able to open the file in CC2018
On a hunch I have re-saved the file having converted the fonts to Ariel.
See if the file now opens.
I did this because Photoshop is wanting to make some font substitutions to your file.
If my attached version of your file opens - it may be because of the...
Have a quick look here - Tweening I am not saying it is the best tutorial but the info is there.
I am about to retire - but if it doesn't make any sense to you I will sort out a tutorial for you tomorrow.
I have noticed! Just as an aside I know your dog is Pip - coincidentally one of our cats is called Pip! When we got him he would open his mouth to meow but because he was so young all he could do was squeak - so to begin with we called him pipsqueak which is now shortened to Pip.
Today I had a problem.
Because of a pesky Windows update my system restarted with Photoshop open and some files open in Photoshop.
Because of this next time I tried to open Photoshop it tried to recover the files that had been open - I waited for 20 minutes but Photoshop was still trying to...