This has happened now 3-4 times (waiting to see if I get this last payment). I contacted LL the first time and they delivered payment. NOW they told me to submit a JIRA ticket as it looks like an oficial bug. No word on IF they are even gonna send payment once fixed.. basically dodged the direct question.
ANYways... since I couldn't find an open one, I submitted a ticket here: https://jira.secondlife.com/browse/BUG-3077