Control: close -1 > ValueError: CTR mode needs counter parameter, not IV This issue might have been related to some non-supported Paramiko version. Too long ago to hunt it down. Similar issues haven't been observed recently. Closing this issue report in the process of migrating X2Go BTS to X2Go GitLab's issue tracker. Mike -- DAS-NETZWERKTEAM c\o Technik- und Ökologiezentrum Eckernförde Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde mobile: +49 (1520) 1976 148 landline: +49 (4351) 850 8940 GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de