You should write a comment on the theme for the author to see it and fix it.
By the time I had written that, SP76 was removed and replaced by SP77 (which you quoted).
That's certainly one way to get around a buggy theme and any minor enhancements.
It needs to be smaller. Download (save) one already on the mod to see its size.
"every background image i upload is staggered and repeating instead of filling the screen." Yes. Read the field label. I do believe it says 'pattern'.
@lrmexico that should have been a comment not a review. Can you post a screenshot of the failure for the author.
@BSmods You need to test your theme using the latest version of escribe.