Oh, I see what you meant. Well, I think you need to remove the single quotes from around the variable, like:
PHP Code:
standard_error(fetch_error($vbphrase['no_perm_rep_post']));
but I'm not sure if that's what was causing the fault.
ETA: actually I'm not sure if you need the call to fetch_error() in there since it looks like you're using a phrase that's already loaded.