Help, Atmel Studio 6.2 suddenly stopped highlighting code in

[berntd]

Hello Suddenly the variables in my code are all in black and no longer highlighted. I am also unable to use the Goto Implementation option.
I don't know what has changed but I have uninstalled, reinstalled, rebnooted, rebuilt etc. It is always the same.
It is the same problem on any solution I open. Is there a setting for this somewhere?

Regards
Bernt


PS This forum does not show Carriage returns and everything I type here apears as one really long line. This is a recent problem. I am using IE