Hi ,
I have just upgraded to 3.4.3 and have tried to change the logo image in my substance template.
The window pops up but remains blank ( Ive tried it on chrome, mozilla and IE and they all come out the same.)
I cant type the image path into the box as it wont let you.
I have just swapped the image that it was defaulting to (logo.png in images folder under template) but I have multiple template versions and want to use two different logo's.
I also tried using the custom css but that wouldnt overide the default.
Any ideas how to fix this one?

Thanks very much,
G