Category structure missing after upgrade

[How Violins]

Hi,
I have done an upgrade to 2.0.22
On the front end I get the following error
Category id 0 not published

in the backend, the site category structure is missing. (shows only Washupito)
All products are shown in backend.
The site category structure is for finnish language, and is not available to select.
The data is visible in phpmyadmin.


I can find products using the search function. When selecting the product from search, the category structure is visible in the URL
http://www.howviolins.fi/sello/sellot/4-4-sellot/cantabile-sellosetti



PHP Version    5.3.20
Database Version    5.1.69
Joomla! 2.5.8

Any ideas? Help much appreciated.

[jenkinhill]

1. See http://forum.virtuemart.net/index.php?topic=116747.msg394129#msg394129

2. Maybe the same as this: http://forum.virtuemart.net/index.php?topic=117077.msg395172#msg395172

[How Violins]

Hi jenkinhill,
Thanks for your response. I have tried both these solutions already and no luck.
For some reason, I can't even get the Finnish language to show up as an option in configuration.
If I roll back to an earlier version, I get 500 errors on the product fly pages, but can see the categories.
in version 2.0.22 I get no categories but can search and find products.
Have tried with/without SEF
with/without multilang setup
Reinstalled vmart
reinstalled languages
hmmm. Curious problem.
Thanks for your input!