Error messages in log when enabling Blog_reactions

When I enable this module I get tons of error messages in my log file. Note that one is similar to the one mentioned in #310487: Invalid parameters for watchdog(), except in the log file it is not shown as coming from blog_reactions, but rather from cron or dblog:

• First, I get a php error from blog_reactions (the red (X)), without any further details.
• Then, errors from cron:
  
  strtr() [<a href='function.strtr'>function.strtr</a>]: The second argument is not an array. in /drupal-6.6/modules/syslog/syslog.module on line 106
  
  
  syslog() expects parameter 1 to be long, string given in /drupal-6.6/modules/syslog/syslog.module on line 79.
• Then errors similar to the ones mentioned in #310487: Invalid parameters for watchdog()
  
  Invalid argument supplied for foreach() in /drupal-6.6/includes/common.inc on line 789.
  
  
  strtr() [<a href='function.strtr'>function.strtr</a>]: The second argument is not an array. in /drupal-6.6/includes/common.inc on line 806.

When I disable blog_reactions, these messages disappear.

This is on Drupal-6.6 and PHP 5.2.4.

Any ideas?

r.