So: I'm having a problem or two that's likely to be related to a particular software package. I can't say I'm surprised - the software's been buggy and crash-prone from the off, has a UI designed to appeal only to a designer, and the online support is anything but.
I choose to uninstall the software with an application the supplier supplies. Halfway through the install, it tells me that I should have quit out of mail, as it's uninstalling a component with which it vandalised my mail application. It quits its own uninstall and gives me a nice, although temporary log.
I quit mail, and (with a hint of a tester premonition) head off to find the uninstaller, so I can uninstall the final component of this rotten puzzle.
The uninstaller has, naturally, uninstalled itself.
(for those of you unfamiliar with why this is a problem, it's broadly analogous to locking the keys inside the car)