Problems using FMS 4.5 livepkr app and ios devices

Hello i have the next problem on flash media server 4.5.

Im following the tutorial from adobe web site:http://www.adobe.com/es/devnet/flashmediaserver/articles/install-verify.html

It looks realy easy to install, i follow te turoial but im unable to watch the inclued demo videos from ios devices or safari (HLS LIVE STREAMING) like show on the tutorial on the ipad i get a black screen.

I tried on my desktop using local network and on a server running linux having the same results.

Also tried looking at the demos from different devices and safari on windows having the same problem.

Steraming rmtp video or preloding works flawless, i see no errors on the fms logs.

Also i can stream to the server using FME perfectly on the adobe admin console i can see the connections to the livepkr app and the streams created but when i open the url from the iphone "m3u8" i get a black screen. Streaming rmtp live video and viewing using the flash media player works ok.

I dont realy know what to do.