Unable to Authenticate - Redirect URI does not match registered redirect URI

[pyramidion]

After adding in my keys and clicking "Generate Access Token", I'm taken to a white page with this error:
{"code": 400, "error_type": "OAuthException", "error_message": "Redirect URI does not match registered redirect URI"}

Instagram client info: http://cloud.adamsmith.im/OPl6
Both url's are mydomain.com, as outlined in the module instructions.

Not sure where to go from here. Thanks.

[AbeCole]

Redirect URL needs to be set similar to this:

http://www.yourdomain.com/admin.php?S=0&D=cp&C=addons_modules&M=show_module_cp&module=tgl_instagram&callback=true

[farneman]

According to the docs at http://instagram.com/developer/authentication/ using only http://www.yourdomain.com/admin.php is enough.