Various Manager pages fail to render, shows error "Mako failed to render" after upgrading to 6.1

[a212830]

Hi,

I updated my dev server to 6.1 and when I try to access my search peers, I get the following error:

2014-05-06 09:23:48,489 ERROR [5368e263cf1c461fd0] init:281 - Mako failed to render:
Traceback (most recent call last):
File "/apps/splunk/lib/python2.7/site-packages/splunk/appserver/mrsparkle/controllers/init.py", line 277, in render_template
return templateInstance.render(*template_args)
File "/apps/splunk/lib/python2.7/site-packages/mako/template.py", line 283, in render
return runtime.render(self, self.callable, args, data)
File "/apps/splunk/lib/python2.7/site-packages/mako/runtime.py", line 575, in _render
*kwargs_for_callable(callable, data))
File "/apps/splunk/lib/python2.7/site-packages/mako/runtime.py", line 607, in render_context
_exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
File "/apps/splunk/lib/python2.7/site-packages/mako/runtime.py", line 633, in _exec_template
callable(context, args, **kwargs)
File "/apps/splunk/share/splunk/search_mrsparkle/templates/layout/base.html", line 18, in render_body
<%self:render/>
File "/apps/splunk/share/splunk/search_mrsparkle/templates/layout/base.html", line 33, in render_render
## define main HTML wrapper
File "/apps/splunk/share/splunk/search_mrsparkle/templates/layout/base.html", line 93, in render_pagedoc
<%next:body/>
File "/apps/splunk/share/splunk/search_mrsparkle/templates/layout/view.html", line 22, in render_body
${next.body()}
File "/apps/splunk/share/splunk/search_mrsparkle/templates/layout/admin.html", line 15, in render_body
${next.body()}
File "/apps/splunk/share/splunk/search_mrsparkle/templates/admin/index.html", line 96, in render_body
% endif
File "/apps/splunk/lib/python2.7/site-packages/mako/runtime.py", line 502, in include_file
callable(ctx, *kwargs_for_include(callable, context.orig, *kwargs))
File "/apps/splunk/share/splunk/search_mrsparkle/templates/admin/list.html", line 332, in render_body
<%call expr="genListRows(namespace, uiHelper, entities, endpoint_path, kwargs)"/>
File "/apps/splunk/share/splunk/search_mrsparkle/templates/admin/_helpers.html", line 738, in render_genListRows
% if role == '' or role in auth.listUsers()[auth.getCurrentUser()['name']]['roles']:
File "/apps/splunk/lib/python2.7/UserDict.py", line 23, in __getitem_
raise KeyError(key)
KeyError: u'admin'