Mod_python error: "PythonHandler mod_python.publisher"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py", line 213, in handler
    published = publish_object(req, object)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py", line 412, in publish_object
    return publish_object(req,util.apply_fs_data(object, req.form, req=req))

  File "/usr/lib/python2.4/site-packages/mod_python/util.py", line 439, in apply_fs_data
    return object(**args)

  File "/var/www/vhosts/yourspacewestsussex/htdocs/do/ecco.py", line 74, in view
    return action.finish()

  File "/var/www/vhosts/yourspacewestsussex/htdocs/do/eccocms/EccoViewAction.py", line 245, in finish
    return EccoAction.finish(self)

  File "../eccocms/EccoAction.py", line 267, in finish

  File "../bright/Webapp2.py", line 380, in finish

  File "/var/lib/python-support/python2.4/Cheetah/Template.py", line 989, in __str__
    def __str__(self): return getattr(self, mainMethName)()

  File "/var/www/vhosts/yourspacewestsussex/htdocs/do/tmpl/ecco/super.py", line 817, in respond
    self.pagetitle(trans=trans)

  File "/var/www/vhosts/yourspacewestsussex/htdocs/do/tmpl/ecco/super.py", line 178, in pagetitle
    _v = VFFSL(SL,"title_end",True) # '$title_end' on line 54, col 36

  File "/var/www/vhosts/yourspacewestsussex/htdocs/do/tmpl/ecco/discounts_list.py", line 89, in title_end
    _v = VFFSL(SL,"thesetags",True)[0] # '$thesetags[0]' on line 4, col 23

IndexError: list index out of range