I recommend you use kickstart 1.3, 68000 with more compatible ticked, match A500 speed, OCS with 512k chip/512k slow or Full ECS with 1mb chip for older games.
And you have tried booting from the adf?
Some links:
http://cpc464.back2roots.org/page05.htm
http://www.pcguru.plus.com/uae_faq.html
http://eab.abime.net/showthread.php?s=&threadid=3239