Hi,

I am trying to upgrade my Joomla 1.5.23 site from K2 2.54 to 2.55 but fail to get the upgrade to work.

When I upload and install the 2.55 zip I receive the error message...

JInstaller::install: Error! Could not find a Joomla! XML setup file in the package.
Unable to detect manifest file

but below that the message "Install Component Success" is shown and needless to say, the ZIP file does contain a manifest.xml file.

After that my site is compromised with font sizes being changed, erratic behavior and error messages such as ...

Warning: Invalid argument supplied for foreach() in /homepages/0/dxxxxxxxxx/htdocs/websitek2/libraries/joomla/database/database/mysql.php on line 678
Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /homepages/0/dxxxxxxxxxx/htdocs/websitek2/plugins/system/k2.php on line 344

being shown at the top (site ID x'ed out for privacy reasons).

I can remedy this problem by downgrading to 2.54, but would of course like to benefit from the cool new features of 2.55. Is there anything I have to do in prep for the upgrade process? Previous upgrades worked like a charm...

Regards,
Ingmar