Hi,
Testing on 1.7.0 RC1, though I suspect this bug may be in other versions as well.
On the iPhone, when trying to load a remote image into an ImageView, if that remote image url contains a space the image will not load and will fail with a warning the image is null. It works fine on Android.
Removing space characters from the remote filename or performing a string replace using the escape code (%20) in Titanium also works.
Suggest that URL escaping should be part of the call to the remote file by default?