Issue: Tried to upgrade and got error

You are receiving this error because VaultWiki thinks your server's MySQL max_allowed_packet setting is too low. Over the past years, we've noticed that users tend to get errors installing any add-ons if they have a setting less than 32M, although this typically occurs on vBulletin installations due to large cache sizes vBulletin creates. So in the latest releases we've added a warning message to tell users they probably won't be able to complete the install/upgrade due to this setting being low.

It is entirely possible that this setting can be lower on XenForo-based sites, since overall XenForo is lighter and more efficient than vBulletin. If you have success lowering the requirement without encountering database errors, please let us know and we will reduce it for XenForo users.

In vault/core/controller/cp/install/vw.php, find:
Set the number lower. MySQL's default is 1048576 unless you or your host have it set differently.

If you receive any of the following MySQL errors:

• exceeded max_allowed_packet
• MySQL has gone away

Then your max_allowed_packet setting really is too low. In this case, please let us know what you have to increase the server setting to, since there are limited resources on this matter for XenForo.

I looked on the XenForo forum today and Mike has said that none of their queries exceed 500 KB, so the MySQL default might be sufficient. However, I see a handful of threads of people using the 1M default and it not being sufficient for certain tasks/pages.

I know if you make a wiki page as long as the default setting 100,000 characters, you will probably hit the 1M default when you try to save it. This might be a fringe case though, I created a test page with 500,000 characters and it will never save under XenForo before PHP hits the time limit. Interestingly, the same test page does save under vBulletin.

In mySQL I changed the max_allowed_packet changed to 2M . However, I still have the same problem. What should I do?

Dustin

You must change the line in the file I specify above to reduce the requirement.

In vault/core/controller/cp/install/vw.php, find all:
Replace all with:

I got a step 1 error:

I see that the code for the Gamma 4 upgrade script relies on functionality that is not available until PHP 5.4. Since the minimum requirement is PHP 5.3, we need to rewrite how this works.

Fixed in build 004. Please download the new build from the Members area if you are getting this error.

What I need to change to lower max packet size requirement in VaultWiki + vBulletin?
Our server does not allow to change the max allowed packet size, it has fixed value = 16 MB.

// EDIT: FOUND IT. /vault/core/controller/cp/install/vb3.php

I tried installing the recent patch, but I still get this error:

Failed to Meet Minimum Requirements
minimum_requirements_error_mysql_packet

The patch doesn't work, I still get the same error

Now the browser is stuck at Upgrade Progress: 43%

Now I get this error for Step 5: Please enter a valid callback method (CES_Listener::navigation_tabs).

The invalid callback is fixed in build 005. It is due to a corrupt XML file in the installer. Please download Gamma 4 Build 005 and the issue should be resolved.

I tried the new patch but now it stalls at step 4 and I can 't see the reason.