Hello j_triax10,
JTK 3.0 is Beta and we don't support on Beta Products till there stable.
But error your getting is not because JTk 3.0 I have tested it with Flash.
from your code you have added the flash JTK 2.1
Code:
<script src="<?php echo "$GLOBALS[mosConfig_live_site]/templates/$GLOBALS[cur_template]/images/"; ?>AC_RunActiveContent.js" type="text/javascript"></script>
it needs to be like
Code:
<script src="templates/<?php echo $this->template ?>/images/AC_RunActiveContent.js" type="text/javascript"></script>
Cheers,
Brian
Joomla Template Kit 3.0 should be stable with Doc's Late May