I had read that from a previous post.

my top banner looks like [SB]\Images\Top8.bmp

my side banner looks like [SB]\Images\sbInstall.bmp

I have also tried pointing to the image file
top banner C:\Program Files (x86)\Lindersoft\SetupBuilder 10
Developer\Images\Top8.bmp
side banner C:\Program Files (x86)\Lindersoft\SetupBuilder 10
Developer\Images\sbInstall.bmp

I still get the same error message.
You are pointing me to errors with the installer images. The problem
seems to be with the readme file it does indicate sb5.

Thanks
Gary