Running Reddit - Paster Shell errors re: webhelpers.rails deprecated - reddit

Question

ubuntu#ubuntu-02:/reddit/r2$ paster serve --reload example.ini http_port=8080Starting subprocess with file monitor
/usr/local/lib/python2.6/dist-packages/Pylons-0.9.6.2-py2.6.egg/pylons/middleware.py:11: DeprecationWarning: The webhelpers.rails package is deprecated.
- Please begin migrating to the new helpers in webhelpers.html,
webhelpers.text, webhelpers.number, etc.
- Import url_for() directly from routes, and redirect_to() from
pylons.controllers.util (if using Pylons) or from routes.
- All Javascript support has been deprecated. You can write link_to_remote()
yourself or use one of the third-party Javascript libraries.
from webhelpers.rails.asset_tag import javascript_path
/reddit/r2/r2/lib/manager/tp_manager.py:22: DeprecationWarning: the sha module is deprecated; use the hashlib module instead
import pylons, sha
Traceback (most recent call last):
File "/usr/local/bin/paster", line 8, in <module>
load_entry_point('PasteScript==1.7.3', 'console_scripts', 'paster')()
File "/usr/local/lib/python2.6/dist-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 84, in run
invoke(command, command_name, options, args[1:])
File "/usr/local/lib/python2.6/dist-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 123, in invoke
exit_code = runner.run(args)
File "/usr/local/lib/python2.6/dist-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 218, in run
result = self.command()
File "/usr/local/lib/python2.6/dist-packages/PasteScript-1.7.3-py2.6.egg/paste/script/serve.py", line 276, in command
relative_to=base, global_conf=vars)
File "/usr/local/lib/python2.6/dist-packages/PasteScript-1.7.3-py2.6.egg/paste/script/serve.py", line 313, in loadapp
**kw)
File "/usr/local/lib/python2.6/dist-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 203, in loadapp
return loadobj(APP, uri, name=name, **kw)
File "/usr/local/lib/python2.6/dist-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 224, in loadobj
return context.create()
File "/usr/local/lib/python2.6/dist-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 617, in create
return self.object_type.invoke(self)
File "/usr/local/lib/python2.6/dist-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 109, in invoke
return fix_call(context.object, context.global_conf, **context.local_conf)
File "/usr/local/lib/python2.6/dist-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/util/fixtypeerror.py", line 57, in fix_call
val = callable(*args, **kw)
File "/reddit/r2/r2/config/middleware.py", line 558, in make_app
load_environment(global_conf, app_conf)
File "/reddit/r2/r2/config/environment.py", line 54, in load_environment
config['pylons.g'] = app_globals.Globals(global_conf, app_conf, paths)
File "/reddit/r2/r2/lib/app_globals.py", line 173, in __init__
self.memcache = CMemcache(self.memcaches, num_clients = num_mc_clients)
File "/reddit/r2/r2/lib/cache.py", line 108, in __init__
client.behaviors.update(behaviors)
File "build/bdist.linux-x86_64/egg/pylibmc.py", line 105, in update
File "build/bdist.linux-x86_64/egg/pylibmc.py", line 172, in set_behaviors
_pylibmc.MemcachedError: memcached_behavior_set returned 45
I'm an absolute noob when it comes to running web services, just started learning Linux, and only know T-SQL and ActionScript 2. So, suffice to say that I'm a bit out of my depth here.
I know there are issues with various versions of python-webhelpers, and at least libmemcached, and at this point, I'm pretty stuck. I'm not great at Linux, so I'm never sure what version of a program I've got installed, and neither am I sure which versions are the working versions for what's in the git repository at the moment. What I'd like to do would be to uninstall libmemcached and webhelpers, and reinstall to the correct version. I get the feeling that doing this would require me to re-do much of the process, which is fine, provided it works.
Any help on how to resolve this error would be MUCH appreciated. I've gotten a lot of help previously from answered questions on this site, and I'm hoping someone much smarter than me has the answer to this one!

Answer 1

I encountered this exact same problem, and downgrading to libmemcached-0.48 fixed it.
Make sure you rebuild pylibmc after you do this.