Error in indexing using Lookout

[Peter]

I'm using Lookout Version 1.2.0.1924. I'm getting the following error for
some folders during indexing:

Inventures_Olk.MAPI.MAPITableEnumeratorException: Error getting folder items
Could not open message store (MAPI 1.0 - The information store could not be
opened. (0,649))) (0x8004011d): Could not open message store (MAPI 1.0 - The
information store could not be opened. (0,649))) (0x8004011d) --->
MapiLib.MapiException: Could not open message store (MAPI 1.0 - The
information store could not be opened. (0,649))) (0x8004011d)

What does it mean? I have no problem in reading emails from those folders.


Thanks.