I have latest Drupal 7 seven in multisites with single codebase and multi database, and i have custom File System, not using sites/default/files, but: sites/mydomain/files. where user picture is located at sites/mydomain/files/pictures.

I'm getting this error message when i try to propagate :

An AJAX HTTP error occurred. HTTP Result Code: 500 Debugging information follows. Path: /batch?id=73&op=do StatusText: OK ResponseText: Exception: Unable to add file http://my-sso-server.com/sites/default/files/pictures/picture-1-13549012... in MediaInternetFileHandler->preSave() (line 241 of ../sites/all/modules/media/modules/media_internet/media_internet.module).

can this default location changed with user custom file system? or i missed something? thank you..