Hi, This looks like it is a problem with the NeuroDebian install process and not specific to FSL. Please forward this problem to: [log in to unmask]<mailto:[log in to unmask]> and they should be able to help. All the best, Mark On 6 Aug 2014, at 09:14, mahsa abadian <[log in to unmask]<mailto:[log in to unmask]>> wrote: Dear FSL experts, I am trying to install FSL on ubuntu 12.4 but I have faced problem I did step by step according to FSL installation manual 1. added neurodebian repository 2.sudo apt-get update 3. sudo apt-install fsl - complete but at this level after nearly one hour these lines appeared in terminal. I do not know where the problem is ? Setting up qt-assistant-compat (4.6.3-3ubuntu2) ... Setting up fsl-5.0-complete (5.0.7-1~nd12.04+1) ... Setting up fsl-complete (5.0.7-1~nd12.04+1) ... dpkg: dependency problems prevent configuration of fsl: fsl-core (5.0.7-4~nd12.04+1) breaks fsl (<< 5.0.3) and is installed. Version of fsl to be configured is 4.1.8-1ubuntu1. dpkg: error processing fsl (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: fsl E: Sub-process /usr/bin/dpkg returned an error code (1) I would really appreciate if anybody could help me. mahsa