Personal Paintings

[MajorWard]

I recently got this mod from the Nexus and created some custom paintings to hang in my settlements.  While the landscape paintings are fine, the portrait ones are distorted, like they've been squashed vertically to fit, despite the created DDS files being the same size as the placeholder blanks.  

I went to go to the mod page to see if I'd got something wrong or if anyone else had encountered it and worked out a fix but it has been deleted.  I have a horrible reason I know why, too...

Has anyone else got this mod and worked out the correct ratio for landscape paintings?