I recently created a slide show that works fine on my desktop, works great from the test server when viewed through the flash produced HTML but once the swf is uploaded via a content management system we have problems. Further investigation showed that the CMS is set up for a few versions back so I saved backward which dropped my actionScript back to 1.0 and 2.0. I totally re-wrote the actions script and again, everything works great on my box but the same issues are showing up. Is versioning backward in this manner the problem. Must I start from scratch or should I be looking for another solution.
My advice would be to use only AS 2 for the future. AS 3 isn't fully compatible with previous versions and in addition will not play on most of the user's hardware (not all users update flash player so regularly). Also remember to tick the AS tab on export options to AS 2 when saving backward.
Do you mean the publish settings?
Yes, publish settings. For some projects clients even demand AS 1 and flash player 6, when it comes to wide user audience such as banners and other promotional, advertising work. So if you have to convert AS 3 to AS 1 - there are huge differences. Better stick with AS 2.