It turned out this error was caused by the python installation on the
computer node, I reinstalled Python 2.7.3 on the computer node and then
fetch_eggs.py doesn't generate any problem, however when I submit a job in
Galaxy and the job fails with the following error:

Traceback (most recent call last):
  File "./scripts/set_metadata.py", line 24, in <module>
    import galaxy.model.mapping #need to load this before we unpickle,
in order to setup properties assigned by the mappers
  File "/home/galaxy/galaxy-dist/lib/galaxy/model/__init__.py", line
13, in <module>
    import galaxy.datatypes.registry
  File "/home/galaxy/galaxy-dist/lib/galaxy/datatypes/registry.py",
line 5, in <module>
    import data, tabular, interval, images, sequence, qualityscore,
genetics, xml, coverage, tracks, chrominfo, binary, assembly,
ngsindex, wsf, hmm
ImportError: Bad magic number in
/home/galaxy/galaxy-dist/lib/galaxy/datatypes/wsf.pyc



On Wed, Jan 23, 2013 at 3:48 PM, Luobin Yang <yangl...@isu.edu> wrote:

> Hi, Nate,
>
> It seems fetch_eggs.py does not run correctly on the compute node, which
> runs Ubuntu 12.04.1 LTS and Python 2.7.3. After I ran "python
> scripts/fetch_eggs.py", I got the following errors:
>
> Traceback (most recent call last):
>   File "scripts/fetch_eggs.py", line 30, in <module>
>     c.resolve() # Only fetch eggs required by the config
>   File "/home/galaxy/galaxy-dist/lib/galaxy/eggs/__init__.py", line 345,
> in resolve
>     egg.resolve()
>   File "/home/galaxy/galaxy-dist/lib/galaxy/eggs/__init__.py", line 195,
> in resolve
>     return self.version_conflict( e.args[0], e.args[1] )
>   File "/home/galaxy/galaxy-dist/lib/galaxy/eggs/__init__.py", line 226,
> in version_conflict
>     r = pkg_resources.working_set.resolve( ( dist.as_requirement(), ),
> env, egg.fetch )
>   File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in
> resolve
>     raise DistributionNotFound(req)
> pkg_resources.DistributionNotFound: docutils==0.7
> Error in sys.excepthook:
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 66,
> in apport_excepthook
>     from apport.fileutils import likely_packaged, get_recent_crashes
> ImportError: No module named apport.fileutils
>
> Original exception was:
> Traceback (most recent call last):
>   File "scripts/fetch_eggs.py", line 30, in <module>
>     c.resolve() # Only fetch eggs required by the config
>   File "/home/galaxy/galaxy-dist/lib/galaxy/eggs/__init__.py", line 345,
> in resolve
>     egg.resolve()
>   File "/home/galaxy/galaxy-dist/lib/galaxy/eggs/__init__.py", line 195,
> in resolve
>     return self.version_conflict( e.args[0], e.args[1] )
>   File "/home/galaxy/galaxy-dist/lib/galaxy/eggs/__init__.py", line 226,
> in version_conflict
>     r = pkg_resources.working_set.resolve( ( dist.as_requirement(), ),
> env, egg.fetch )
>   File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in
> resolve
>     raise DistributionNotFound(req)
> pkg_resources.DistributionNotFound: docutils==0.7
>
>
>
> On Wed, Jan 23, 2013 at 2:48 PM, Nate Coraor <n...@bx.psu.edu> wrote:
>
>> On Jan 23, 2013, at 4:09 PM, Luobin Yang wrote:
>>
>> > Hi,
>> >
>> > I ran into this error and I found the following thread discussing the
>> problem, interestingly, for my system, the computer node runs the same
>> Python version as the head node, but with a newer OS version, but it also
>> generates this error. Does this mean the Galaxy system requires the
>> computer nodes in a cluster to have the same version of OS and the same
>> version of Python?
>> >
>> > http://comments.gmane.org/gmane.science.biology.galaxy.devel/3188
>> >
>> > Luobin
>>
>> Hi Luobin,
>>
>> If you remove the galaxy-dist/eggs/ directory and then run:
>>
>>     galaxy-dist% python ./scripts/fetch_eggs.py
>>
>> On both the galaxy server and the cluster, the output should reveal the
>> differences in what platforms are being detected.  It's not required that
>> they be the same OS or Python version, but if they differ they will both
>> need to acquire platform-specific eggs.  Normally missing eggs are fetched
>> automatically, but there are a few cases where you have to run
>> fetch_eggs.py by hand.
>>
>> --nate
>>
>> > ___________________________________________________________
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>>
>
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