Reported in https://github.com/piwik/piwik/issues/6841#issuecomment-67279217
Regression from the new cache system.
You can see the line number (2767) it breaks at here http://pastebin.com/55VGSEB3
), );Piwik\\Plugin\\ViewDataTable' => array (
Notice how the variable ends and then there is an invalid string. It looks like the flie got written to, and then partially written to. Race condition. How can we prevent this bug?