>>>Hi,
>>>If you haven't done it already, pack the DBC and see what happens.
>>>
>>It didn't help.
>>
>>I'm going to delete Data directory, may be defrag my disk, then copy production backup and resume tests.
>
>Did you try on another PC?

I've tried on my colleague's PC and got this error too. I don't know what to do. The code does intensive data manipulation, but why would it give this error almost every time on a big file?