When I install sage-9.0-OSX_10.15.2-x86_64.app.dmg on macOS Catalina (10.15.2) and run if for the first time, the "starting" web page comes up almost immediately, followed by a pop-up error window saying that "Jupyter Server failed to start." From the log, it looks like the patching of the installation files does not finish properly. See a copy of the log entries below. Note that the last line is not complete.
Does anyone have an idea what the issue could be? I have a working installation of Sage 9.0 on another Mac running 10.15.2, albeit not completely free of issues, but cannot see the difference between the two. (As a side note, the log file of the working installation does not show the "patching" lines at all. Actually, the log is not showing any new information at all anymore. Has a new log been created on that system and is the app showing the previous version of the log?)
From the log on the installation that isn't working
This might take a few minutes but only has to be done once.
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/build/make/Makefile-auto
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/config.status
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/2to3-3.7
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/ESingular
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/NRswitchg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/QuadraticSieve
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/R
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/Rscript
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/Singular
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/TSingular
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/addedgeg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/adjacency
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/adjacency_gmp
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/allfaces
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/allfaces_gmp
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/amtog
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/annotate
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/biplabg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cas_help
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/catg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cddexec
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cddexec_gmp
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cl
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/complg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/converseg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/copyg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/countg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cu2
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cubex
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cubhamg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/curve_keygen
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cygdb
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cysignals-CSI
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cython
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/cythonize
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/deledgeg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/delptg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/directg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/dreadnaut
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/dretodot
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/dretog
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/easy_install
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/easy_install-3.7
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/ecl
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/ecl-config
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/ecm
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/f2py
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/f2py3
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/f2py3.7
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/fai
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/fflas-ffpack-config
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/fourier
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/fourier_gmp
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/fplll
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/freetype-config
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/futurize
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gac
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gac-e
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gap-bin
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gcc-ar
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gcc-nm
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gcc-ranlib
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gcov
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gcov-dump
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gcov-tool
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gd2copypal
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gd2togif
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gd2topng
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gdcmpgif
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gdlib-config
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gdparttopng
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gdtopng
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/genbg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/genbgL
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/geng
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/genquarticg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/genrang
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/genspecialg
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gentourng
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gfan
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gfortran
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/giftogd2
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/givaro-config
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/givaro-makefile
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/glpsol
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gp-2.11
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gphelp
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gsl-config
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gsl-histogram
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/gsl-randist
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/hamheuristic
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/hevea2mml
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/icas
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/idle3.7
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/iptest
patching /Applications/SageMath-9.0.app/Contents/Resources/sage/local/bin/iptest3
patching /Applications/SageMath-9.0.app/Contents/Resources/sa
