I am running Ubuntu 12.04 LTS and I would like to install FSLView. I cannot install it through Ubuntu Software Center, and when I try installing the package via the command line with sudo dpkg -i fslview_4.0.0~beta1-1~nd12.04+1_amd64.deb, I get a simple error:

Errors were encountered while processing: fslview

apt-get upgrade tells me:

09:58:29 Downloads > sudo apt-get upgrade Reading package lists... Done Building dependency tree        Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies:  fslview : Depends: neurodebian-popularity-contest but it is not installable
           Depends: libqt4-qt3support (>= 4:4.5.3) but it is not installed
           Depends: libqtassistantclient4 (>= 4.6.3) but it is not installed
           Depends: libqwt5-qt4 but it is not installed
           Depends: libvtk5.8-qt4 but it is not installed
           Recommends: fslview-doc but it is not installable
           Recommends: qt-assistant-compat but it is not installed
           E: Unmet dependencies. Try using -f.

What does "is not installable" mean? If I do apt-get -f install, FSLView only gets removed. How do I fix this?

1 Answer 1


Install the missing dependencies manually, then try to install FSLView again. is not installable means that the package is not available in the repositories. You have to get and install the neurodebian-popularity-contest package manually like you did with fslview.

Luckily there seems to be a package source for it that even contains fslview. Edit your /etc/apt/sources.list and add those line:

deb http://neuro.debian.net/debian/ precise contrib main non-free

After that you're going to have to install the repositories key:

sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com A5D32F012649A5A9

After that you can try installing fslview using apt-get:

sudo apt-get update
sudo apt-get install fslview

If I haven't missed anything this should work.

  • Hi André, Thanks for your reply. Installing worked like a charm. However, I do get an error when I try to run fslview, but I believe this may be due to some incompatibilities between fslview and Ubuntu 12.04 LTS. This is the error I receive: fslview: symbol lookup error: /usr/lib/x86_64-linux-gnu/libQt3Support.so.4: undefined symbol: _ZNK14QWidgetPrivate17hasHeightForWidthEv
    – Vincent
    Commented Feb 25, 2013 at 14:44

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