IPN attempted with invalid order ID.

Project: 
Ubercart
Category: 
bug report
Priority: 
normal
Status: 
closed

I installed Ubercart in Drupal 5.2.
I am currently testing Paypal Payment gateway using Paypal Sandbox.
Check out is working fine.
But it seems Order ID is not correctly sent to Paypal via IPN.
I configured Paypal to use the following URL as a ping back address.
http://www.mysite.com/testing/?q=uc_paypal/ipn
As you might notice that my site doesn't support clean urls.

Initially i left the ipn url blank in Paypal configuration page.
But IPN was totally broken when i left that field blank.

Can anybody suggest a solution???

Will discuss through this

Will discuss through this thread. It's turning up as a bad order ID because the order ID should be part of the URL for authentication purposes. You should leave the setting field blank in your PayPal profile for the IPN URL but make sure IPN is turned on.