[Typo3-dev] Minor note on upgrading extension(s)

[Michael Stucki]

Hi Kari,

> one of my customers updated Extended calendar today.
> His Typo3 version was still 3.5.0
> After updating Typo3 didn't render anything either on fontend or backend
> !!! as extension was for 3.7.0 and installed Typo3 was 3.5.0
> 
> Situation was quite chaotic as there was no way to get into backend and
> the logs for httpd and mysql were also quite useful.
> I checked how old backups we had and they where too old to save anything
> (now I'm creating better system for backups).

...but it would have been so easy: Edit typo3conf/localconf.php and remove
the failing extension from $TYPO3_CONF_VARS['EXT']['extList'].

If you think this should be documented somewhere, tell me where you think
the best place for this could be and suggest a description of the
problem/solution.

> Lessons learned:
> - make backups frequently (both Typo3 and MySQL and at the same moment
> and more frequently if there is alot development at the site keeping
> backup versions for longer period)

Or ask here before starting to panic :-)
Please never give up your installation without asking on a list (this one is
probably not the best one for such problems, though) before, there is
almost always a way to solve the problem.
(Exception: You dropped the tt_content table ;-))

> - Typo3 should have checking that newer extensions (newer versions that
> installed Typo3 should not be installed to site) also some kind of
> checking that only stable versions could be installed

Yes that's definitely a requirement, but I don't think that anybody is yet
working on it.

Cheers, michael
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