Continuation Access Freezes with email is not sent on second iteration

Dear Experts,

This is a follow on question to the one posted here:
https://www.experts-exchange.com/questions/28966302/Access-freezes-when-user-does-not-send-email.html

Seems that when the user attempts to send an email but closes the email dialogue box the first time no problem! This was the initial fix I was looking for. However, if the user (an this happened) attempts to send an email (once and the closes) and then again attempts to send an email then closes the dialogue box again I get the same error and the application freezes.

In fact, the user sends an email successfully then attempts send another one but closes the dialogue box the application freezes. So for whatever reason the error capture works the first time but not subsequent times. In fact, I pressed on the onclick event, then close the mail dialogue box without sending. Then I close the form to see if this would reset things but when I attempted to send another email message but instead closed the mail MS outlook dialogue box the application once again freezes.

I must need to 'reset' something after the first attempt but not certain what that needs to be. Attached are screenshots of the errors I am getting.

When i close the ms outlook dialogue box for the second time

When I try to close the application after the error message