We have conducted testing of most of our actions with Mac OS X 10.6 Snow Leopard. During our testing, we encountered only a small number of issues, and we have released updated versions of the actions that address these. So, the short answer is, yes, our actions should work in Snow Leopard.
If, as you use the actions in Snow Leopard, you do encounter a bug, please let us know so we can investigate it and release a fix. You can submit bug reports via our feedback page here... http://www.automatedworkflows.com/contact/feedback.html. You can also post bugs on our support forum, which we monitor regularly.