Hi All, Holger... Iâve seen this today: http://forum.world.st/MongoCursor-gt-gt-execute-and-MongoTalk-changes-td4889... <http://forum.world.st/MongoCursor-gt-gt-execute-and-MongoTalk-changes-td4889...> After talking with some people in the Pharo chat group at Discord about this erratic error Iâm having with MongoTalkâs MongoCursor . Once it happens, the stream stays open and Mongo says isValid true but no other operations can be executed. Iâve loaded MongoTalk with: Metacello new githubUser: 'pharo-nosql' project: 'voyage' commitish:'1.?' path: 'mc'; baseline: 'Voyage'; load: 'mongoâ. in a Pharo 6.1 image. Did this Unexpected responseTo happened again to you? nextRequestID has the code you mention in the issue: nextRequestID ^requestID := requestID + 1 bitAnd: 16r3FFFFFFF Do you have any further hint on why the issue? Thanks! Sebastian