Cleaner log entry if deluged missing

deluge/ui/client.py

@@ -665,6 +665,11 @@ class Client(object):
             else:
                 subprocess.call(["deluged", "--port=%s" % port, "--config=%s" % config])
         except OSError, e:
+            from errno import ENOENT
+            if e.errno == ENOENT:
+                log.error(_("Deluge cannot find the 'deluged' executable, it is likely \
+that you forgot to install the deluged package or it's not in your PATH."))
+            else:
                 log.exception(e)
             raise e
         except Exception, e: