Mass import - Access Denied

Hi.

I am using AF in latest development version 5.x-1.x-dev (1.4.2008) and all my other modules are in newest versions, Drupal is 5.7.

I have a problem, when some user logs in and creates Album, and then use "mass import" tab, enters five images to upload, then Submit - after a while, user see message Access Denied (you are not allowed to access this page). When user looks inside album, all five uploaded photos are there, but in log I see message:

Cannot modify header information - headers already sent by (output started at /home/www/jednicka/includes/common.inc:388) v souboru /home/www/jednicka/includes/common.inc na řádku 314.

So users can upload photos no matter the error, but it is very annoying if they want to upload more than five photos. If there was no error, after mass import they could immediately upload next five photos, no need to go to another page. But now, after import and access denied message, they need to go to their album from start in my album hiearchy - All albums -> Some album -> Some subalbum > User album and then press mass import again, after five photos imported, another access denied etc. Very annoying.

Can somebody tell me, what is wrong, if any module dependency is broken or what? I didn't change any of my site-wide permissions, it appeared after some AF upgrade.

Thanks a lot in advance

lakyljuk