I gave up on this but now want to try again with windows 10. I'm still using a Mac with a virtual machine running windows 10. Sometimes the hearthbuddy client will run for several matches but then just closes. I used the wizard.
Of course when I want it to crash and grab a log it decides to go a good long stretch but eventually got the usual crash. Here is the log. Hopefully you have a solution for me or at least something I can try. View attachment Hearthbuddy 5616 2015-08-22 19.30.zip
It vanishes. Hearthstone will be locked up and I can't do anything with it but if i restart Hearthbuddy it will regain control and play a game or two before vanishing again.