Error in Adding the In-app Billing Library

Question

I was doing this following these steps as mentioned in the link.

1. Copy the IInAppBillingService.aidl file to your Android project.
   (1) If you are

Answer 1

The only advice I can give you is to re-check spelling of the directories in your src folder, if you put the file into /src/com/android/vending/billing/IInAppBillingService.aidl it should work