SQLState Error after Upgrading from 1.x Version to Latest Version (no replies)

Dear all,

i am having a problem after upgrading from a around 3-4 years old version to the latest DL Version of Piwik.
On the day of installation all was running fine, also I got timeouts during Database Upgrade, at the end of the installation the system said all installed sucessfully! Login was working and I was able to see almost all widgets working. But yesterday, I got the error:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'log_action.url_prefix' in 'field list'

On almost all widgets...

So I guess the database upgrade failed somehow.

What is the right way, to fix the problem. I saw there is an option to restart the database upgrade manually, but now i am not sure, which version we had before. I know it was a 1.x , but how can i find out?

I have the old config.ini.php and functions.php, but do i find the Version Number in it?

Thanks for the help!

Dennis