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

[Kari Salovaara]

Hi devs,

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).

How situation was saved:
1) I made extra backups and I upgraded into Typo3 version 3.7.0
2) used installation tool to check database and modify it to meet the 
new version (3.7.0)
3) made the needed updating to static template values (letter spacing 
for menues)
4) checked all the pages
5) now the site with some 10 domains is working.

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)
- 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
- to rescue and save the situation like this needs experienced Typo3 
knowledge

I'm not making this case as a bug as I'm not going to test it once again!

Now I'm going to have a beer, maybe something like an other fine Danish 
invention, look at http://www.voresoel.dk/

Cheers,
Kari

-- 
Kari Salovaara
Project Manager
Finland