Warnings and errors

Hi
After installing and activating. On the first settings page I get:

Notice: Undefined index: runnerslog_op_hidden in /home/xxxxx/public_html/wp-content/plugins/runners-log/runnerslog_admin.php on line 2

The other settings pages also show errors
I’ve removed and re installed the plug-in
Still happens 🙁

http://wordpress.org/extend/plugins/runners-log/