After having formatting my computer (W7-64bits), I have re-installed QGIS 2.0.1-64 bits on it . But I can not use GRASS, SAGA or R via Toolbox (or Processing). I have checked the path in the Options, and I have tried to uninstall and re-install it again, but it doesn’t work yet. In the beginning of the re-install, I have a message telling that I QGIS is already installed, but it didn't remain any folder or files link with Qgis. I checked as well in the option and plugin setting, but everything seem to be fine (plugin activate, plugin repositories connected...).

Did I install something else than QGIS? did I miss a step, etc.?

Many thanks for help!

  • You ask if you need to install something else than QGIS: Did you install grass/saga/r ? You have to manually select this in the advanced options in the OSGEO4W installer – Curlew Jan 28 '14 at 11:25
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    Selecting QGIS should activate the modules as dependencies as well. At least it did for me with qgis-dev. – AndreJ Jan 28 '14 at 12:03
  • @Curlew: Indeed, I did not activate the advanced interface... Many thanks! – user26278 Jan 28 '14 at 14:23

QGIS also installs files in your user directory (.qgis2 and subfolders), and writes some data to the registry.

If re-installing does not help, try the 32bit installation of OSGEO4W. The 64-bit version still has some issues where it does not behave as expected.


After looking at your screenshot given in the comments:

There is nothing wrong with your installation, just click on the simplified interface bottom right and change to advanced interface.

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  • Thank you for your answer. I also have deleted this file (.qgis2) before re-install QGIS. And I also tried to install the 32 bit version, but GRASS, SAGA or R didn't work neither. – user26278 Jan 28 '14 at 11:15
  • Can you add a screenshot with the error message to your question? – AndreJ Jan 28 '14 at 12:02
  • Here is the screenshot with the error message when I re-installed QGIS 2.0.1 today, even if I uninstalled QGIS. But, just after the formatting the QGIS installation worked well, excepted that I could not use GRASS or SAGA via the Toolbox. i.stack.imgur.com/0yGx6.jpg – user26278 Jan 28 '14 at 13:16
  • Sorry, I meant the error when trying to run GRASS SAGA or R. What are the shields on the icons good for? – AndreJ Jan 28 '14 at 13:27
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    There is nothing wrong with your installation, just click on the simplified interface bottom right and change to advanced interface... – AndreJ Jan 28 '14 at 14:05

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