i'm using your class on mac osx. the cache folder has chmod 777, and the cache file gets created, but only as -rw-r--r-- , that's why I am getting "could not open cache for writing" and then "could not open cache for apending" errors. shouldn't the cache file be writeable by everybody?
i don't understand what I am doing wrong. if you have a moment, please let me know how to fix this.