Have you checked the Accutron support page:
http://www.accutron.com/support.htm

Have you contacted Accutron support:
http://www.accutron.com/contact.htm

Are there any support materials on the Analog Devices website?

Is there a discussion forum?

Have you tried searching here to see what others have had to say about it?

Failing that, as Erik says, go for one of the "mainstream" toolsets - Keil is probably the market-leader, and most expensive, followed by Raisonance; SDCC is well-used, and free.