Spyder fails to launch after update to rc1 - Aborted (core dumped)

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

after updating to 4.0.0rc1 from 4.0.0b7 spyder fails to launch.

spyder --reset fails as well

What steps reproduce the problem?

1. upgraded to rc1 from 4.0.0b7

What is the expected output? What do you see instead?

Spyder logo loads and crashes

Paste Traceback/Error Below (if applicable)

7f2f4bf4f000-7f2f4bf56000 r--s 00000000 08:05 1050346                    /usr/lib64/gconv/gconv-modules.cache
7f2f4bf56000-7f2f4bf57000 rw-p 00000000 00:00 0 
7f2f4bf57000-7f2f4bf58000 r--p 00021000 08:05 786459                     /usr/lib64/ld-2.17.so
7f2f4bf58000-7f2f4bf59000 rw-p 00022000 08:05 786459                     /usr/lib64/ld-2.17.so
7f2f4bf59000-7f2f4bf5a000 rw-p 00000000 00:00 0 
7ffe664d2000-7ffe664f5000 rw-p 00000000 00:00 0                          [stack]
7ffe665cd000-7ffe665cf000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
Aborted (core dumped)

Versions

• Spyder version: rc1
• Python version: 3.7 CONDA LIST:

# packages in environment at /work/user/anaconda3/envs/someenv: # # Name Version Build Channel _libgcc_mutex 0.1 main alabaster 0.7.12 py_0 conda-forge appdirs 1.4.3 py_1 conda-forge argh 0.26.2 py37_1001 conda-forge asn1crypto 1.2.0 py37_0 conda-forge astroid 2.3.2 py37_0 conda-forge atomicwrites 1.3.0 py_0 conda-forge attrs 19.3.0 py_0 conda-forge autopep8 1.4.4 py_0 conda-forge babel 2.7.0 py_0 conda-forge backcall 0.1.0 py_0 conda-forge basemap 1.2.1 py37hd759880_1 conda-forge bleach 3.1.0 py_0 conda-forge bzip2 1.0.8 h516909a_1 conda-forge ca-certificates 2019.9.11 hecc5488_0 conda-forge cartopy 0.17.0 py37hd759880_1006 conda-forge certifi 2019.9.11 py37_0 conda-forge cffi 1.13.2 py37h8022711_0 conda-forge cftime 1.0.4.2 py37hc1659b7_0 conda-forge chardet 3.0.4 py37_1003 conda-forge cloudpickle 1.2.2 py_0 conda-forge cryptography 2.7 py37h72c5cf5_0 conda-forge curl 7.65.3 hf8cf82a_0 conda-forge cycler 0.10.0 py_2 conda-forge dbus 1.13.6 he372182_0 conda-forge decorator 4.4.1 py_0 conda-forge defusedxml 0.6.0 py_0 conda-forge diff-match-patch 20181111 py_0 conda-forge docutils 0.15.2 py37_0 conda-forge entrypoints 0.3 py37_1000 conda-forge expat 2.2.5 he1b5a44_1004 conda-forge flake8 3.7.9 py37_0 conda-forge fontconfig 2.13.1 h86ecdb6_1001 conda-forge freetype 2.10.0 he983fc9_1 conda-forge future 0.18.2 py37_0 conda-forge geographiclib 1.49 py_0 conda-forge geos 3.7.2 he1b5a44_2 conda-forge gettext 0.19.8.1 hc5be6a0_1002 conda-forge glib 2.58.3 h6f030ca_1002 conda-forge gst-plugins-base 1.14.5 h0935bb2_0 conda-forge gstreamer 1.14.5 h36ae1b5_0 conda-forge h5py 2.9.0 nompi_py37hcafd542_1103 conda-forge hdf4 4.2.13 h9a582f1_1002 conda-forge hdf5 1.10.4 nompi_h3c11f04_1106 conda-forge icu 64.2 he1b5a44_1 conda-forge idna 2.8 py37_1000 conda-forge imagesize 1.1.0 py_0 conda-forge importlib_metadata 0.23 py37_0 conda-forge ipykernel 5.1.3 py37h5ca1d4c_0 conda-forge ipython 7.9.0 py37h5ca1d4c_0 conda-forge ipython_genutils 0.2.0 py_1 conda-forge isort 4.3.21 py37_0 conda-forge jedi 0.14.1 py37_0 conda-forge jeepney 0.4.1 py_0 conda-forge jinja2 2.10.3 py_0 conda-forge jpeg 9c h14c3975_1001 conda-forge jsonschema 3.1.1 py37_0 conda-forge jupyter_client 5.3.4 py37_0 jupyter_core 4.6.0 py37_0 keyring 19.2.0 py37_0 conda-forge kiwisolver 1.1.0 py37hc9558a2_0 conda-forge krb5 1.16.3 h05b26f9_1001 conda-forge lagranto 0.1.7 py37_1001 conda-forge lazy-object-proxy 1.4.3 py37h516909a_0 conda-forge libblas 3.8.0 14_openblas conda-forge libcblas 3.8.0 14_openblas conda-forge libclang 9.0.0 hc9558a2_1 conda-forge libcurl 7.65.3 hda55be3_0 conda-forge libedit 3.1.20170329 hf8c457e_1001 conda-forge libffi 3.2.1 he1b5a44_1006 conda-forge libgcc-ng 9.1.0 hdf63c60_0 libgfortran-ng 7.3.0 hdf63c60_2 conda-forge libiconv 1.15 h516909a_1005 conda-forge liblapack 3.8.0 14_openblas conda-forge libllvm9 9.0.0 hc9558a2_2 conda-forge libnetcdf 4.6.2 hbdf4f91_1001 conda-forge libopenblas 0.3.7 h6e990d7_2 conda-forge libpng 1.6.37 hed695b0_0 conda-forge libsodium 1.0.17 h516909a_0 conda-forge libspatialindex 1.9.3 he1b5a44_1 conda-forge libssh2 1.8.2 h22169c7_2 conda-forge libstdcxx-ng 9.1.0 hdf63c60_0 libtiff 4.0.10 hfc65ed5_1004 conda-forge libuuid 2.32.1 h14c3975_1000 conda-forge libxcb 1.13 h14c3975_1002 conda-forge libxkbcommon 0.9.1 hebb1f50_0 conda-forge libxml2 2.9.10 hee79883_0 conda-forge lz4-c 1.8.3 he1b5a44_1001 conda-forge markupsafe 1.1.1 py37h516909a_0 conda-forge matplotlib 3.1.1 py37_1 conda-forge matplotlib-base 3.1.1 py37he7580a8_1 conda-forge mccabe 0.6.1 py_1 conda-forge metpy 0.10.2 py37_0 conda-forge mistune 0.8.4 py37h516909a_1000 conda-forge more-itertools 7.2.0 py_0 conda-forge nbconvert 5.6.1 py37_0 conda-forge nbformat 4.4.0 py_1 conda-forge ncurses 6.1 hf484d3e_1002 conda-forge netcdf4 1.4.2 py37h808af73_0 anaconda nspr 4.23 he1b5a44_0 conda-forge nss 3.47 he751ad9_0 conda-forge numpy 1.16.4 py37h95a1406_0 conda-forge numpydoc 0.9.1 py_0 conda-forge olefile 0.46 py_0 conda-forge openssl 1.1.1c h516909a_0 conda-forge owslib 0.18.0 py_0 conda-forge packaging 19.2 py_0 conda-forge pandas 0.25.0 py37hb3f55d8_0 conda-forge pandoc 2.7.3 0 conda-forge pandocfilters 1.4.2 py_1 conda-forge parso 0.5.1 py_0 conda-forge path.py 12.0.2 py_0 conda-forge pathtools 0.1.2 py_1 conda-forge patsy 0.5.1 py_0 conda-forge pcre 8.43 he1b5a44_0 conda-forge pexpect 4.7.0 py37_0 conda-forge pickleshare 0.7.5 py37_1000 conda-forge pillow 6.2.1 py37h6b7be26_0 conda-forge pint 0.9 py37_2 conda-forge pip 19.3.1 py37_0 conda-forge pluggy 0.13.0 py37_0 conda-forge pooch 0.6.0 py37_0 conda-forge proj4 5.2.0 he1b5a44_1006 conda-forge prompt_toolkit 2.0.10 py_0 conda-forge psutil 5.6.4 py37h516909a_0 conda-forge pthread-stubs 0.4 h14c3975_1001 conda-forge ptyprocess 0.6.0 py_1001 conda-forge pycodestyle 2.5.0 py_0 conda-forge pycparser 2.19 py37_1 conda-forge pydocstyle 4.0.1 py_0 conda-forge pyepsg 0.4.0 py_0 conda-forge pyflakes 2.1.1 py_0 conda-forge pygments 2.4.2 py_0 conda-forge pykdtree 1.3.1 py37hc1659b7_1002 conda-forge pylint 2.4.3 py37_0 conda-forge pympler 0.7 py_0 conda-forge pyopengl 3.1.3b2 py_1 conda-forge pyopenssl 19.0.0 py37_0 conda-forge pyparsing 2.4.2 py_0 conda-forge pyproj 1.9.6 py37h516909a_1002 conda-forge pyqt 5.12.3 py37hcca6a23_0 conda-forge pyqt5-sip 4.19.18 pypi_0 pypi pyqtwebengine 5.12.1 pypi_0 pypi pyrsistent 0.15.5 py37h516909a_0 conda-forge pyshp 2.1.0 py_0 conda-forge pysocks 1.7.1 py37_0 conda-forge python 3.7.3 h33d41f4_1 conda-forge python-dateutil 2.8.1 py_0 conda-forge python-jsonrpc-server 0.2.0 py_0 conda-forge python-language-server 0.29.3 py37_0 conda-forge pytz 2019.3 py_0 conda-forge pyxdg 0.26 py_0 conda-forge pyyaml 5.1.2 py37h516909a_0 conda-forge pyzmq 18.1.0 py37h1768529_0 conda-forge qdarkstyle 2.7 py_0 conda-forge qt 5.12.5 hd8c4c69_1 conda-forge qtawesome 0.6.0 py_0 conda-forge qtconsole 4.5.5 py_0 conda-forge qtpy 1.9.0 py_0 conda-forge readline 8.0 hf8c457e_0 conda-forge requests 2.22.0 py37_1 conda-forge rope 0.14.0 py_0 conda-forge rtree 0.8.3 py37h7b0cdae_1003 conda-forge scipy 1.3.1 py37h921218d_2 conda-forge seaborn 0.9.0 py_1 conda-forge secretstorage 3.1.1 py37_0 conda-forge setuptools 41.6.0 py37_1 conda-forge shapely 1.6.4 py37hec07ddf_1006 conda-forge six 1.12.0 py37_1001 conda-forge snowballstemmer 2.0.0 py_0 conda-forge sphinx 2.2.1 py_0 conda-forge sphinxcontrib-applehelp 1.0.1 py_0 conda-forge sphinxcontrib-devhelp 1.0.1 py_0 conda-forge sphinxcontrib-htmlhelp 1.0.2 py_0 conda-forge sphinxcontrib-jsmath 1.0.1 py_0 conda-forge sphinxcontrib-qthelp 1.0.2 py_0 conda-forge sphinxcontrib-serializinghtml 1.1.3 py_0 conda-forge spyder 4.0.0rc1 py37_0 spyder-ide spyder-kernels 1.7.0 py37_0 spyder-ide sqlite 3.30.1 hcee41ef_0 conda-forge statsmodels 0.10.1 py37hc1659b7_1 conda-forge testpath 0.4.2 py_1001 conda-forge tk 8.6.9 hed695b0_1003 conda-forge tornado 6.0.3 py37h516909a_0 conda-forge traitlets 4.3.3 py37_0 conda-forge urllib3 1.25.6 py37_0 conda-forge watchdog 0.9.0 py37_1 conda-forge wcwidth 0.1.7 py_1 conda-forge webencodings 0.5.1 py_1 conda-forge wheel 0.33.6 py37_0 conda-forge wrapt 1.11.2 py37h516909a_0 conda-forge wurlitzer 1.0.3 py37_0 conda-forge xarray 0.14.0 py_0 conda-forge xorg-libxau 1.0.9 h14c3975_0 conda-forge xorg-libxdmcp 1.1.3 h516909a_0 conda-forge xz 5.2.4 h14c3975_1001 conda-forge yaml 0.1.7 h14c3975_1001 conda-forge yapf 0.28.0 py_0 conda-forge zeromq 4.3.2 he1b5a44_2 conda-forge zipp 0.6.0 py_0 conda-forge zlib 1.2.11 h516909a_1006 conda-forge zstd 1.4.3 h3b9ef0a_0 conda-forge

• Operating System name/version:

[ccordoba12]

If you have the same error, it means you’re still using conda-forge. Please run these commands instead:

conda create -n spyder-dev -c defaults python=3.7
conda activate spyder-dev
conda install -c spyder-ide -c defaults spyder=4.0.0rc1

[stavna]

Hi there, brining this thread back to life after some major development

after executing $ conda remove --force rtree_

spyder4 loads and prompts an error that rtree is missing (duhh) but at least it runs.

any ideas ?? @ccordoba12