In case you haven't noticed there will be a new version of the Sprite library soon. The final beta, version 1.24, is here http://www.b4x.com/forum/basic4ppc-wishlist/4523-sprite-attributes-properties-3.html#post26065 with a help file in post #25.
If you have used the Sprite library previously I would be grateful if you would try the new library and report any issues. There is an overview of the changes in the Overview topic of the help including some behavioural changes that might affect existing code.
If you have used the Sprite library previously I would be grateful if you would try the new library and report any issues. There is an overview of the changes in the Overview topic of the help including some behavioural changes that might affect existing code.