Help! My PIWIK just died! (2 replies)

I have had Piwik installed for about a year and have never had any problems.
Today when I tried to open up Piwik I got the following page:


So I removed the file config/config.ini.php (well I just changed the name to temp-config.ini.php so I wouldnt lose it)

Then I got this:


I tried it twice with the same result (i.e. I restored the original config.ini file name).

My mobile gave me this error:


I dont want to lose all my data, can anyone please help?!