I feel terrible, I wish aussie beer was my excuse.
In fixing up 4.x wbar issue for epdfview, only just completed, I noticed I had a wbar config that "snuck" into 4.x for a package that was attempting to load a 64x64 icon.
I have now removed my bug report as it was false, and in reply number 19 removed all traces of mention of that wbar issue. Ditto later replies.
In some ways, I am glad I tried to test 5.x but it goes to show, that I am not ready to do any testing when I failed to test things correctly on 4.x
In case you think I am looking for some kind of "pls have a go", you are wrong as my mind is made up.
(I am surprised I can still see this typing after punching the monitor so hard)
I will send a pm to my "victim" and sacrifice a beer or two in his honour.