# Error when upgrading from TokuDB 7.5.2 to Percona tokudb-56-5.6.26-rel74.0

**URL:** <https://forums.percona.com/t/error-when-upgrading-from-tokudb-7-5-2-to-percona-tokudb-56-5-6-26-rel74-0/4413>\
**Category:** Other MySQL® Questions\
**Created:** [September 23, 2015, 2:01pm UTC](https://forums.percona.com/t/error-when-upgrading-from-tokudb-7-5-2-to-percona-tokudb-56-5-6-26-rel74-0/4413 "2015-09-23T14:01:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fernandomm](https://avatars.discourse-cdn.com/v4/letter/f/e0b2c6/32.png) [@fernandomm](https://forums.percona.com/u/fernandomm)\
**Post date:** [September 23, 2015, 2:01pm UTC](https://forums.percona.com/t/error-when-upgrading-from-tokudb-7-5-2-to-percona-tokudb-56-5-6-26-rel74-0/4413/1 "2015-09-23T14:01:29Z")

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I’m simulating an upgrade from TokuDB 7.5.2 to Percona-Server-tokudb-56-5.6.26-rel74.0.el7.x86\_64. Everything looked fine except for one table in which I get the following error when trying to access it:

Incorrect information in file: ‘./mailer/log.frm’

I tried a REPAIR TABLE but it didn’t worked. So I stopped Mysql and copied this file again from production server. It failed.

I’m pretty sure that it isn’t corrupt since the same file/table is working fine with TokuDB 7.5.2.

Any ideas about how to fix this issue?