Unable to make changes in the settings

I have disabled all other plug ins. I am using this as per recommendation from WPTutorialsPLR.com to work with their index program.
Post label fields showing the following in the windows
<?=esc_attr($postLabel[0]); ?>
<?=esc_attr($postLabel[1]); ?>
<?=esc_attr($postLabel[2]); ?>

Seeing more source code on General settings page
for instance
top of General Settings page the title is
pluginLabel); ?>

the submit button does not say ‘submit’ instead it has
<? esc_attr_e(‘Save Changes’, ‘post-index’); ?>

and when attempting to submit it states I don’t have permission to make changes. I’m logged in as administrator

http://wordpress.org/extend/plugins/post-index/