[web2py] ImportError, after making 1.99.4 -> 1.99.7 -> 1.99.4

[Jose]

I upgraded to 1.99.7, but errors occurred when connecting to the database. Then 
I went back to 1.99.4 and now I have more than 100 errors

Traceback (most recent call last):
  File "/home/web2py/gluon/restricted.py", line 194, in restricted
    in code it raises a RestrictedError containing the traceback. layer is
  File "/usr/home/web2py/applications/autogestion/models/db_00_main.py", line 
4, in <module>
    from gluon.tools import *
  File "/home/web2py/gluon/custom_import.py", line 294, in __call__
    #except Exception, e:
  File "/home/web2py/gluon/custom_import.py", line 78, in __call__
    level)
  File "/home/web2py/gluon/tools.py", line 28, in <module>
    from storage import Storage, PickleableStorage, StorageList, Settings, 
Messages
ImportError: cannot import name PickleableStorage


Updates are made ​​by extracting the zip file and overwriting the old

Jose