View topic - YafaRay installation problems on Windows, read here.

YafaRay installation problems on Windows, read here.

Post here general questions about usage of YafaRay and about the Blender Exporter UI

YafaRay installation problems on Windows, read here.

Post Tue Jul 21, 2009 11:37 am

During Installation
During the YafaRay installation process, the installer automatically detects the Blender scripts folder wherever it is, and installs yafaray_ui.py there. Obviously, for this to happen Blender must be installed before YafaRay. Two things can happen:

  • The installer tells you nothing and finishes the installation. It means that the Blender scripts folder has been found, and yafaray_ui.py has been put there.
  • If YafaRay can not find the scripts folder, it displays a windows like this:
    Image

    If you get this windows, it means that the YafaRay installer can not find registry information about Blender and where it has got its stuff installed. It could happen if you installed Blender using a zip archive for instance. You should manually select where the Blender scripts folder is.

Problems once YafaRay is installed
  • YafaRay was apparently installed successfully, but you don't get an item in Blender Render menu, to launch the YafaRay settings interface.
  • The script crashes when it is launched.
  • You can not tell where yafaray_ui.py is installed, there isn't a folder with such a file.
Solutions
  • The YafaRay export item doesn't show up in Render menu: First be sure Python is installed. It must be a version compatible with both the Blender & YafaRay versions installed. Be sure yafaray_ui.py is installed in the scripts folder linked to the Blender install you are using, specially if you have more than one Blender installation in your computer.
  • Looking for yafaray_ui.py: The Blender scripts folder in C:\documents and settings\{user}\appdata is a hidden folder by default. In that case, the best way to check where you have yafaray_ui.py is using the search tool, with 'looking in hidden folders' option enabled, or enable 'show hidden folders' in the files explorer.
    The Blender scripts folder can be in C:\program files\Blender Foundation\Blender as well, depending on what option you chose for user data files when Blender was installed.
  • The script crashes: Use latest versions of YafaRay & Blender. Be careful, you should have compatible versions of Blender & Python & YafaRay installed. It is explained in YafaRay download page, please read it. The latest compatible combination is:
    Python 2.6.6 - Blender 2.49a - YafaRay 0.1.1 stable
  • The script crashes: If there are some yafaray scripts from previous YafaRay versions that has not been correctly unistalled, you should look for then in the active Blender scripts folder and remove them. Only yafaray_ui.py stays in Blender scripts folder.
  • You keep on getting different kind of python crashes: If you have a mess of several Blender installations, scripts folders, unistalled YafaRay versions, and several Python versions installed as well, nothing will work and you will be getting different kind of crashes untill all the issues are solved.

    Be in command of your system, and get a clean compatible installation of all needed software after a thoroughly unistallation of every Blender, YafaRay and Python found. When unistalling Blender:
    • Erase scripts folder as requested by the unistaller.
    • Go to C:\program files\ and, if there is still a Blender Foundation folder, be sure there ins't any YafaRay stuff inside, particularly QT libraries QTcore*.dll and Qtgui*.dll. Or just delete the entire folder.
    • Go to C:\documents and settings\{user}\appdata, if there is still any Blender folder there, be sure there ins't any YafaRay script inside (yaf*.py).
    • Remember, install YafaRay after Blender
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