Hi, Since a couple of weeks i'm have not been able to download packages with Metacello on last image versions from Jenkins. Today i found that if i revert changes on httpClient method from MCHttpRepository everything works fine again. I haven't research deeply on why, i'm not an expert on Zinc, but the message that is breaking everything and making my image to receive a 400 error from squeaksource is setAcceptEncodingGzip that is addinng the gzip header to the requests. As i said, i haven't going to deep with this but as i am the only one who is watching this behavior perhaps is something only for squeaksource. If this is actually an issue and not some fault from myself, and someone give me some help, i can help with the solution. Cheers, Guido.