I've had issues with Outlook crashing while running tests in the Test Complete IDE. It basically becomes unresponsive and I have to kill the process manually in Windows. Often I have to restart my system to resolve the issue. I tend to have Outlook minimized on my desktop while working in TC IDE. It happens enough to be irritating but not quite enough to take the trouble to try and capture some information to open a ticket! Next time it happens I might see if I can gather some information to open a ticket with SmartBear. I use OLE object in a couple of my test scripts to read in test data from spreadsheets. Not sure if these tests had been or were running when Outlook crashed.
