After a lot of debugging I solved the problem. Thanks !

 I'm using firefox browser

 The error appears after the message : "Your invite was successfully sent." and I hit close button or expect window to close automatical. Because of the error the response of  opensocial.requestShareApp(friends_sent, reason, sendInvites); that I expect in sendInvites(resonse) function is undefined

Hello,  I have a stressfull error for 2 days. I'm still looking over the code but I'm not able to find the error.    <script type="text/javascript"> var u = location.href, h = u.substr(u.indexOf('#') + 1).split('&'), t, r; try {  t = h[0] === '..' ? parent.parent : ...

Thanks for the reply !!! It seems nobody is reading what we write here. For the admin that rejected my app : http://developer.myspace.com/Community/blogs/devteam/archive/2009/07/06/invites-max-now-at-20.aspx

User Experience / Functionality: MySpace apps should not send random mass messages / invites. Please remove the following buttons from the Canvas Surface "Select 20 / Invite 20" (under the "Mobs" tab). I think is another bag joke from my app reviewer. It's the second app that I have on My Space. The first one : Life ...

The admin says : " 1. Impede Browser Functionality. On Home / Profile Surfaces, clicking on the <AppTitle> takes the user to the Canvas Surface. Clicking on the “Back” button of the browser once does not bring the user back to the previous Surface (in IE 7)."   Somebody makes jokes with me because IT WORKS :).

Thanks for the advice Video.  You've oppened my mind ! I was using location.href="#topAnchor";. I've replaced with location.replace("#topAnchor"); but the same problem on IE. The solution is if (browser=="Microsoft Internet Explorer" && (version>=4)){ //nothing     ...

Thanks for the advice but my app is HTML :(. The BACK button works on IE also but you have to press it TWICE. I have no ideea why.

" Impede Browser Functionality. On Home / Profile Surfaces, clicking on the <App Title> takes the user to the Canvas Surface. Clicking on the “Back” button of the browser once does not bring the user back to the previous Surface." that's what Myspace admins tell about my app. (It happens only on IE 6 or less... on FF works ...