Traceback (most recent call last):
  File "./scripts/set_metadata.py", line 29, in <module>
    import galaxy.model.mapping #need to load this before we unpickle, in order to setup properties assigned by the mappers
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/model/__init__.py", line 23, in <module>
    import galaxy.datatypes.registry
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/datatypes/registry.py", line 5, in <module>
    import data, tabular, interval, images, sequence, qualityscore, genetics, xml, coverage, tracks, chrominfo, binary, assembly, ngsindex, graph
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/datatypes/data.py", line 2, in <module>
    import metadata
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/datatypes/metadata.py", line 24, in <module>
    from galaxy.web import form_builder
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/web/__init__.py", line 4, in <module>
    from framework import expose
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/web/framework/__init__.py", line 28, in <module>
    import helpers
  File "/opt/bioinformatics/share/galaxy20130410/lib/galaxy/web/framework/helpers/__init__.py", line 4, in <module>
    from webhelpers import date, stylesheet_link_tag, javascript_include_tag, url_for
ImportError: cannot import name stylesheet_link_tag