i restarted the server many times ,
i disabled the firewall,
but the same issue ,
the last thing i modified before the problem was, that i performed a pin set and set it on the outbound call , and gave some of my extentions a pinless dialing .
after that the problem occured , and FOP is flashing and return green , flashing and return green, and so on .
i downloaded the demo version of fop2 and it was ok , but i want to spent sometime on fop1 before buying fop2,
You say opened firewall, you need to try from a machine on the same LAN and with a different browser.
You also may want to scrub the FOP config files, keep in mind it is not supported anymore and I have no idea what patches Elastix has in place to manage the FOP configs and keep it working.
Have you tried the Elastix forums? The more I think about it this is really not a FreePBX issue.