>>If the index expression can create index keys of different length, you may get this error. What's the index expression?
>>
>>>About month ago, in different customer sites, message
>>>Index tag ... is corrupted. Plese rebuild index starts to occur.
>>>
>>>Reindexing removes this message for a while but it occurs again and again.
>>>Users can ignore this message and in this case last added records are not found
>>>if index search is performed by this index.
>>>
>>>VFP9 application is running for years without this message.
>>>It started to occurs about month ago in 3 different customer LAN networks.
>>>In one site LAN server is windows 2012 server so opportunistic locking cannot disabled probably.
>>>
>>>How to fix or diagnose the isse ?
>>>Is there some windows automatic update which caused this ?
>
>Index epression is
>
>INDEX ON toode tag TOODE
>
>
>and toode type is char(20)

Is this the only index tag? If not, what expressions do you use for the other tags?