PayPal reports that "a small number of capture attempts are currently failing with API error 10001 or 'We are sorry, we cannot process this settlement at this time.'"
They are continuing to work on the issue, which has not yet been reported to us by any of our users.
https://www.x.com/community/ppx/systemstatus/mts_updates/blog/2011/05/28/update-3-intermittent-failures-during-authorization-capture--may-25
