Theme (Creation/Loading) Crashing Qlikview

[#1]

I have a document with a number of differently themed sheets. I am currently trying to save all the themes (backgrounds included) so that I can turn all sheets into one and navigate between the themed reports at the click of a few buttons.

The majority of the themes (5 out of 7) have saved just fine, but when I attempt to save the List Box/Chart theme information over the Sheet/Background theme information (if the Sheet info is loaded first) or load the theme (if the List Box/Chart information is loaded first and the theme saves), Qlikview simply hangs and crashes.

I have tried changing "Fill with Aspect" to "No Stretch" on the image and I have tried a completely different image - the only other differences between the sheets appears to be the Fields and Objects.

Any ideas, please?

Working:

Not Working: