Ok, thanks. Will try that.
Just to let you know...
In std mode with the generic movie sheet do I leave it as: $M\$F_sheet.jpg?
I know the other movie changes to: $M\$N$E_sheet.std.jpg
The problem seemed to stem from the fact that when I checked the files/folders under file management on the WDTV, they showed up as double named.
For example: 127hours_sheet.jpg.jpg
I think I was being extra idiotic by renaming the generated images and adding .jpg on the end.
Anyway, will report back on my progress. Thanks for all the patient help so far.
The link to the naming conventions really helped as well.