There is an issue with the SYNC from the Amiga RGB port on the Amiga for the toaster to work. If you dont use a 1084 or another RGB monitor you need to have a scan converter that is toaster safe or use the sync strainer maybe.
Here is a good read from Newtek on the issue.
http://vbulletin.newtek.com/showthread.php?p=43816#post43816
