i try to upload then said

Fatal error: Allowed memory size of 18874368 bytes exhausted (tried to allocate 8192 bytes) in /hermes/bosweb/web177/b1774/ipg.deafbooknet/engine/lib/filestore.php on line 141

and

[Binary image data]

it don't show file too and download this file (

Forbidden

You don't have permission to access /mod/file/download.php on this server.

How large of images are you trying to upload? It looks like you're hitting your PHP memory limit.

As for the Forbidden, check that permissions are set correctly on /mod/file/download.php.

Permissions on the files. http://docs.elgg.org/wiki/Unix_Permissions_and_Elgg