Error whilst searching large logs

I keep getting an error when I try to expand or search in a large log.  Please see the following dump.  The email bug report option fails to work as well, so apologies for dumping it here…

[Error Log Snipped]

Hi Mr Rimmer,

It appears the database has become corrupted. Please rename the log file, for automise it will be in the same directory as the automise script and have the extension log4. Run the script once again and it will be re-created.