Maybe a usefull workaround for anybody that wants to run the Gallery and do not want to disable Friendly URL's is:
set every gallery to "popup enable". This causes the picture-viewer and slideshow not to use the " " (%20) in the URL, because it pops up a window when a visitor clicks on a photo or chooses the slideshow.
To enable popup go to the module configuration (Gallery configuration) -> Settings -> check "Enable popup".
You have to enable this on a module-by-module basis. (So for every gallery you have in your DNN website).
Tested OK with DNN 4.8.2.
This only solves visitors-access to the pictures and slideshow. (This does not solve the admin-pages-problem, here you have to manually change each url from ...../%20/.... to ..../+/..... .)
All workers on the Gallery v4 module: thanks in advance for a good working ASP2.0 Gallery!
Regards,
Jan-Pieter Veen