Fix crash in refresh when a cache dir contains a key.pkl but no dll.

theano/gof/cmodule.py

@@ -295,7 +295,15 @@ class ModuleCache(object):
                     except:
                         # the directory is still in use??  We just leave it for future removal.
                         pass
-                elif 'key.pkl' in files and (time_now - last_access_time(module_name_from_dir(root)))<self.age_thresh_use:
+                elif 'key.pkl' in files:
+                    try:
+                        entry = module_name_from_dir(root)
+                    except ValueError: # there is a key but no dll!
+                        warning("ModuleCache.refresh() Found key without dll in cache, deleting it.", key_pkl)
+                        info("Erasing broken cache directory", key_pkl)
+                        shutil.rmtree(root)
+                        continue
+                    if (time_now - last_access_time(module_name_from_dir(root)))<self.age_thresh_use:
                         key_pkl = os.path.join(root, 'key.pkl')
                         debug('refresh adding', key_pkl)
                         try:
@@ -319,14 +327,6 @@ class ModuleCache(object):
                             continue
 
                         if key not in self.entry_from_key:
-                        try:
-                            entry = module_name_from_dir(root)
-                        except ValueError: # there is a key but no dll!
-                            warning("ModuleCache.refresh() Found key without dll in cache, deleting it.", key_pkl)
-                            info("Erasing broken cache directory", key_pkl)
-                            shutil.rmtree(root)
-                            continue
-
                             self.entry_from_key[key] = entry
                             # assert that we haven't already got this entry somehow
                             assert entry not in self.module_from_name