[support] Upgrade from 6.16 to 6.22 - should it break things badly?

[Rolf Kutz]

On 11/07/11 11:41 +0100, Chris G wrote:
>I'm afraid I lost the output from drush where all the warning messages
>were shown because I just wanted to undo the mess.

That's to bad, it might have given us a clou what
went wrong. You could record the shell session with 

script -t 2>~/upgrade-drupal.time -a ~/upgrade-drupal.script

>I can possibly try again with (yet another) copy of the site and show
>the error messages here if that might help.

I would try three different approaches: 

a) Deactivate all unneeded modules, upgrade, then
upgrade the modules one at a time and reactivate
them. Run update.php after each step.
b) Make incremential updates, 6.16->6.17...6.22
c) A combination of the above

Good luck
Rolf

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