Deleting the "eggs" and "database/compiled_templates" (and having galaxy regenerate the files) solved the problem.

Assaf Gordon wrote, On 12/29/2010 05:53 PM:

Hi,

After upgrading to the latest galaxy-central version, I get the following exception when listing histories:

File '/data/hannon/gordon/galaxy/galaxy_prod/eggs/Mako-0.2.5-py2.5.egg/mako/template.py', line 85 in __init__ if module._magic_number != codegen.MAGIC_NUMBER: AttributeError: 'module' object has no attribute '_magic_number' ===========

has anyone ever encountered such an error ? Any help would be appreciated.

-gordon