Hey. So were you able to move past this or did it appear again. We're running some tests and it appears that some users behind proxies or firewalls cannot connect correctly to either the ddp client or the server itself and as a result there's a data inconsistency that results in the 500 error. If you're still facing this issue could you help us out by capturing your console logs and emailing it to us on [email protected] ? Part of the reason for the error was that the oplog instance was down but part of it seems to stem from proxies or vpns that we're not able to replicate. Your help would be greatly appreciated. Thanks.