Easy Digital Downloads version 1.8.1 was released this morning in order to fix a few bugs that were either introduced in 1.8 or not fixed in 1.8, including a pretty significant tax calculation error. The complete changelog can be seen below.
One important note about 1.8.1: PayPal itemization for purchases has been disabled due to some price calculation bugs. Purchase summaries will still be shown on PayPal but the items being purchased will not each be listed as line items. This will be corrected in 1.9.
1.8.1: October 12, 2013
Tweak: Itemization in PayPal disabled due to bugs with amount calculation. Will be fixed in 1.9
Tweak: Added filters to admin script loaders so extensions can enable core EDD scripts on custom pages
Fix: Download Limit field shown incorrectly to shop vendors
Fix: Price option name not passed to PayPal
Fix: Settings import doe not perform a filetype check
Fix: Bug with Payment History pagination
Fix: Escapaing issues with text and textarea fields in settings
Fix: Previous purchase lookup on user registration not working
Fix: Deleting payment note redirects to Payment History instead of Edit screen
Fix: Incorrect username in Payment History for guest purchases
Fix: Check for apache before showing .htaccess missing warning
Fix: Add fallback cor cal_days_in_month()
Fix: Tax calculation bug
Fix: Checkboxes in Settings > Extensions cannot be turned off
Fix: Extra <p> tag in the profile editor