tst8800 on "[Plugin: W3 Total Cache] Urgent: Website crashed after activating W3TC"

Hi
Can anyone help me?
Frontend and Backend have crashed just showing:
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 80 bytes) in /home/httpd/vhosts/mind-force.ch/httpdocs/wp-content/plugins/wpml-string-translation/inc/functions.php on line 1048
I can not even log out or access anything anymore!
http://www.mind-force.ch

http://wordpress.org/plugins/w3-total-cache/