Problem in registering

[clairobscur]

I am not able to register as a new user into my gallery at http://www.globallistics.com/gallery/
Could anyone of you inform me what is wrong according to the displayed text when registering?
Thanks for your appreciated help.

[Nibbler]

1.3.3 is no longer supported. You should update your gallery immediately.

[clairobscur]

As you advised, I updated my older version to the latest immediately.
Everything works fine, the update.php-file worked perfect and not one mistake was discovered.........nevertheless, when I try to register as a new user, the register-page is completely white.
Could you please advise me what should be done to correct this?
Thanks in advance for your help.

[Nibbler]

Check permissions on include/mailer.inc.php. Also, since that file contains mail functions your host may have done something to it, so check with them if perms look ok,

[clairobscur]

I changed the permission of include/mailer.inc.php to 755 and that solved the problem.
Thanks for your most appreciated, prompt and effective help, Nibbler !