I get the following error when calling startImpression:completionHandler: a second time:
SKAdNetwork: Error in remote proxy while starting view-through impression: Error Domain=ASDErrorDomain Code=1203 "SKAdNetwork: Cannot start an impression since an open impression already exists." UserInfo={NSLocalizedDescription=SKAdNetwork: Cannot start an impression since an open impression already exists.}
I have called endImpression:completionHandler: on the previous impression using the same SKAdImpression instance used to start the impression and did not get any exception there.
Needless to say I don't get a postback from apple on these impressions.
Any thoughts?