After soundcloud authentication, safari not opening the app

I have created an iPhone application. I have integrated with SoundCloudAPI.

To authorize it, automatically the application will launch the SoundCloud website in safari. After authenti开发者_开发问答cation, it is giving following error message;

"Safari cannot open the page because the address is invalid".

It is not coming back to my current application.

Please guide me to resolve it.

Thanks.

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I have resolved it.

Issue is; I did not change the callback url.

Now it is working fine.