I'm able to create coupons with no errors. When I enter coupon code into the field and click on the submit button I get the following error.
An AJAX HTTP error occurred.
HTTP Result Code: 500
Debugging information follows.
Path: /system/ajax
StatusText: Service unavailable (with message)
ResponseText:
Drupal version 7.28
Commerce Coupon Percentage 7.x-1.0-beta7
dblog messages
// first error
Rules Warning:
Unable to get a data value.
Error:
Unable to get the data property code as the parent data structure is not set.
// second error
Rules Warning:
Unable to evaluate condition commerce_coupon_discount_coupon_codes_exist_on_order.
// second error
PHP Error:
EntityMetadataWrapperException:
Unable to get the data property coupon_id as the parent data structure is not set.
in EntityStructureWrapper->getPropertyValue()(line 438 of /homepages/
36/d385915579/htdocs/bbp/sites/all/modules/entity/includes/entity.wrapper.inc).