Id strongly recommend using AMOS Professional, and updating it as well to v2 (the update is part of the amos pro compiler package). There's also an update or 2 after that (2.21 or thereabouts (its been a while) is where it stopped). Theyre definately worth installing too in my opinion, not just because of the bugfixes and so on, but towards the end more effort was taken in regards to better multitasking and compatibility with ks2+ machines. It's a little bit of effort, but Id definately recommend going to the trouble.