I haven't heard of any problem.
Try alt+tabbing and see if you can find a BC icon, go to that (through alt+tab but holding the tab to see the window and pressing tab to move an icon). Take a screenshot (Alt+Printscreen), type in abort and confirm with Enter. BC will close. Open paint, make the default canvas small, press Ctrl+v, save as png to a location you can later find again, and attach the image you produced here.