I have the same problem on a machine where I installed Ubuntu 19.04. On an older machine, which is updated to Ubuntu 19.04 this problem does not occur. So I believe on the older machine the file was copied correctly when initially installing octave.
Execute octave once with sudo seems to fix the problem for some people: https://forums.fedoraforum.org/showthread.php?321255-Gnu-Octave-quot-Could-not-copy-help-collection-to-temporary-file-quot I have not yet tested this though, I am hoping the bug is resolved with an octave update. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829159 Title: on-disk documentation is not accessible To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/octave/+bug/1829159/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs