QUESTION:

I get a mysql_table_errors message in the pre-flight check on my diagnostics page.
mysql_table_errors: txp_lang: error: Size of indexfile is: 1024 Should be: 53248, txp_lang: error: Corrupt



ANSWER:

This and similar errors mean one or more of your Textpattern database tables have been damaged. Usually a server crash or MySQL bug is the cause.

See this FAQ for more information, including pointers to instructions for repairing tables.