handle error when trying to add inexisting path

[ricardocabral]

Unhandled Error Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/Twisted-11.1.0-py2.6-linux-i686.egg/twisted/web/server.py", line 132, in process self.render(resrc) File "/usr/lib/python2.6/site-packages/Twisted-11.1.0-py2.6-linux-i686.egg/twisted/web/server.py", line 167, in render body = resrc.render(self) File "/usr/lib/python2.6/site-packages/Twisted-11.1.0-py2.6-linux-i686.egg/twisted/web/resource.py", line 216, in render return m(request) File "/usr/lib/python2.6/site-packages/Twisted-11.1.0-py2.6-linux-i686.egg/twisted/web/xmlrpc.py", line 172, in render_POST d = defer.maybeDeferred(function, _args) --- --- File "/usr/lib/python2.6/site-packages/Twisted-11.1.0-py2.6-linux-i686.egg/twisted/internet/defer.py", line 134, in maybeDeferred result = f(_args, _kw) File "/usr/lib/python2.6/site-packages/isk_daemon-0.9.2-py2.6-linux-i686.egg/core/imgdbapi.py", line 626, in addDir return imgDB.addDir(dbId, path, recurse) File "/usr/lib/python2.6/site-packages/isk_daemon-0.9.2-py2.6-linux-i686.egg/imgSeekLib/utils.py", line 63, in checkFunc return func(_args, _kwargs) File "/usr/lib/python2.6/site-packages/isk_daemon-0.9.2-py2.6-linux-i686.egg/imgSeekLib/utils.py", line 55, in echoFunc return func(_args, **kwargs) File "/usr/lib/python2.6/site-packages/isk_daemon-0.9.2-py2.6-linux-i686.egg/imgSeekLib/ImageDB.py", line 191, in addDir for fil in os.listdir(path): exceptions.OSError: [Errno 2] No such file or directory: '/home/ec2-user/data/ '