A new release of the InvoicePlane application is available: v1.4.1
You can download the latest version from the InvoicePlane website.
This version includes fixes for various bugs. The most important fix addresses issues with discounts. Discounts were not calculated and displayed correctly. Please review existing not-issued invoices as amounts may be changed based on the discounts.
Discount price has no appear in the downloaded invoice.
The layouts of pdf’s are not updated. You have to do that youselve.
Great bugfix update btw. Good work 
May i know what is the value for the total discount price? or where can i find for this value?
You can display all available variables and their content with the following code which should be placed on the bottom of the file:
<pre>
<?php print_r($invoice); ?>
</pre>
But i can’t found invoice_item_discount_total.
Hi , i keep getting error too many redirects, can someone help me with that ?
also mod rewrite is enabled