There is more to it: after doing all of the above, plus removing both ~/.sage and org.sagemath.Sage.plist, the jupyter did start. Unfortunately I don't know if the critical step in my case was the removal of ~/.sage or of the plist file.
On Monday, January 6, 2020 at 1:13:50 PM UTC-5, Eric Martin wrote: > > Same behaviour, with the same log, also after giving Sage Full Disk Access > as suggested by Ralf Martin. > > On Monday, January 6, 2020 at 2:44:19 PM UTC+1, slelievre wrote: >> >> >> Mon 2020-01-06 10:04:35 UTC, Eric Martin: >>> >>> After installing sage-9.0-OSX_10.15.2-x86_64.app.dmg, doubling clicking >>> >> the Sage icon immediately results in a window popping up with the message: >>> >> "Jupiter Server fails to start. For some reason the Jupiter server ailed >>> to start. >>> >> [...] >>> >> >> Try running the following commands in a terminal: >> >> APP=/Applications/SageMath-9.0.app >> xattr -dr com.apple.quarantine $APP >> >> If it says you don't have the permissions for that, >> try the same with "sudo" as follows: >> >> APP=/Applications/SageMath-9.0.app >> sudo xattr -dr com.apple.quarantine $APP >> >> -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/61f340cb-8fa5-41ea-b28a-5bfa14fc59f5%40googlegroups.com.
