Hi,
This is the error in the event viewer. Sending you a screen shot.
https://gyazo.com/c1ae2f32501475cc656245896b8d1ae4
And here's the text of the error.
Faulting application name: PF3.exe, version: 3.22.0.0, time stamp: 0x65e1e823
Faulting module name: OLEAUT32.dll, version: 6.2.22621.3527, time stamp: 0x24938189
Exception code: 0xc0000005
Fault offset: 0x00049841
Not sure this gives you any useful information, but I'll run the validation utility as well, see if that helps.
Thanks for your response.
EDIT: I just ran the validation with no errors.