Bug in Subscriptions System and Screened Comments?

Recently I tried to track a comment of mine that had been automatically screened by the journal owner.

I got this as a result:

[Error: Can't use an undefined value as a symbol reference at '/home/lj/htdocs/manage/subscriptions/comments.bml' line 40. @ w83]

Is this a bug? Unscreened comments seem to work fine.