I can dig it.
It would be worth confirming that the plug-in is the trouble by uninstalling for a day or so and see if your crashes go away (assuming you can deal without it for a day or so). That was the case for me. Borrowed a BlackMagic miniMon (their implementation of the TTap) and my crashing went away.
You can also check your Premiere crash log. Assuming you’re on OSX, it’ll be in ~/Library/Logs/DiagnosticReports/Adobe Premiere… Near the top it’ll tell you which thread number crashed, and then there’s a long list of the various threads and what modules are running inside them. In my case, if the report says Thread 35 crashed, I scroll down to thread 35 and it’s all AJATransmit blah blah, so I figure that’s the AJA plug-in dying.
AJA always comes through, and their stuff is very good, so I expect there will be a fix from them sooner rather than later. You can always call them and ask. They’re very friendly people.