Logged In: NO

I don't know much about php but in Perl arrays are defined
by @. So I changed the line 249 from

if (!pnSecAuthAction(0, 'postguestbook::Item',
"$item[name]::$id", ACCESS_DELETE))

to

if (!pnSecAuthAction(0, 'postguestbook::Item',
"@item[name]::$id", ACCESS_DELETE))

I hope it works correctly now.