Error in rails application

I get this strange error on almost all pges of my app. It happens
ramdomly . any ideas?
In this case. i got it in feedAccess but any page would give the exact
same error.

compile error
./script/../config/../app/views/feed/_feedAccess.rhtml:12:
Invalid char `\200' in expression
./script/../config/../app/views/feed/_feedAccess.rhtml:12:
syntax error