Fix to possible memory leak which might impact projects containing many, or very large, images.  

The symptoms of such a memory leak would be the failure of images to render - they would seem to disappear - with the effect being increasingly prevalent the longer the SD7.1 session has been in progress.  

Memory used by images is now effectively freed when the resource is no longer required, i.e. when the project file is closed.

Kind regards,
Rob Robinson
Stardraw.com