Title: Upgrading from Version 3 – 4 without database issues
Last modified: June 8, 2018

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# Upgrading from Version 3 – 4 without database issues

 *  Resolved [hafman](https://wordpress.org/support/users/hafman/)
 * (@hafman)
 * [8 years ago](https://wordpress.org/support/topic/upgrading-from-version-3-4-without-database-issues/)
 * Moving Adrotate from 3.7.4.2 to latest has started a scenario where new ads can’t
   be set because the dates are always 01-01-1970. Saving just puts the ads in the
   red ‘Configuration errors’ list. No dates can be edited on existing ads either,
   the date always resets to 1970. Luckily i’m testing locally at the moment or 
   i would be looking elsewhere.
 * The PHP log is showing `WordPress database error Unknown column 'wp_adrotate_linkmeta.
   bloc` and numerous others.
 * What is the safest way to bring an installation of Adrotate up to the latest 
   version?
    We don’t want to loose all the click data by starting afresh or be 
   stuck with an out of date plugin just because it works.

Viewing 1 replies (of 1 total)

 *  Plugin Author [Arnan](https://wordpress.org/support/users/adegans/)
 * (@adegans)
 * [8 years ago](https://wordpress.org/support/topic/upgrading-from-version-3-4-without-database-issues/#post-10382165)
 * Update to version 4.0 first, then to the latest version.
    That has worked for
   many people.
 * Make sure you have a backup before each update step.
 * Ofcourse having updated over the last 5 years or so would have prevented this
   😉

Viewing 1 replies (of 1 total)

The topic ‘Upgrading from Version 3 – 4 without database issues’ is closed to new
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## Tags

 * [Database Error](https://wordpress.org/support/topic-tag/database-error/)
 * [update](https://wordpress.org/support/topic-tag/update/)

 * 1 reply
 * 2 participants
 * Last reply from: [Arnan](https://wordpress.org/support/users/adegans/)
 * Last activity: [8 years ago](https://wordpress.org/support/topic/upgrading-from-version-3-4-without-database-issues/#post-10382165)
 * Status: resolved