Call to undefined function imagecache_generate_action_submit()

When use configurable actions:
[ ImageCache: Generate configured preset(s) for this node's filefield images ]
system write this error message to php log:
...[26-May-2012 20:16:24] PHP Fatal error: Call to undefined function imagecache_generate_action_submit()in ...myserverpath.../xyz/modules/system/system.module on line 1594
Not define form save function, or another error?