What error do you see? Anything?
Try tracing the page request by using coldfusion/jrun's
sniffer.exe,
Charles, or some other
tool. See what is going on. If the applet is starting to load,
enable the java console and review the errors there.
Does this issue happen on multiple client machines or just
one? What version of CFMX7 are you using (run sysinfo from
cfadmin).