Sigh, that's why I'm continuing to drop support of various Zen Cart versions prior to 1.5.8 ... too many differences. I'll get that corrected for the forthcoming v3.6.5 of the template.
Actually, something's not quite right with your installation. Line 17 of jscript_addr_pulldowns_zca_bootstrap.php for v3.6.4 is a comment. Did you perhaps forget to copy that file?