the original,beta means testing.the original becomes like the beta when it gets updated and then over time a new beta is created.the beta is for testing so users can report all the problems they find in it.(you can't upload in the beta)
@mariosargac(View Post) I suggest you download both. When you want to publish something, use the original. When you want to use the new features, use the beta.
In the beta, has more things than the normal, but you cant upload your creations (use this if you prefer to only play the powder toy and not to upload your things) and in the normal, you can upload, but has less things than the beta version (use this if you prefer to upload your creations)
I download they two, because smetimes like to test, and sometimes prefer to upload :)