Errors and Loads of Errors

First of all, Let me thank you for a superb theme. It looks nice and it does the job. But just today after i bought the theme, i have been seeing various errors in the backend and some in the front end.

1. Front end mostly i assume were due to incomplete API details for paypal, but why are they still showing in the back end above every page? When i browse through my settings and i make any changes then i receive these errors although the changes are saved.

Warning: Cannot modify header information – headers already sent
by (output started at
/home/ujjwapgv/public_html/somesunshine.com/wp-content/themes/funding_press/funding/lib/PayPal/Serializer/Serializer.php:2450)
in /home/ujjwapgv/public_html/somesunshine.com/wp-includes/pluggable.php on line 876

I understand that you are a one man army but you need to help here.

2.Also why is it that I dont see INR (Indian Rupee) but i see other currencies?