Piwik does not work any longer since update to 1.4


I am using Piwik already for longer time and had no problems with it. Since around the date were I updated to 1.4 no usage was logged anymore.

Unfortunately I do not know how to get it analysed to find the reason for it. I am using the javascript method to count the clicks. But when I use the Image tracker code, it is working.

Could you please give me some hints how to get it working again?

I already tried to install 1.4 again without any change.