MACMATH17 With VueScan, the author supports in the vicinity of 750 scanners (most for multiple OS platforms) and raw scan for around 200 cameras. Once an issue arises with one of those supported scanners or cameras, licensees who own that scanner or camera are eager for a new version which fixes that issue, and he has to come up with a fix. If an issue arises on each of those scanners once every three years, then he'd have to submit a 'fix' about once a day, every week-day (taking weekends off).
Given that it supports so many scanners on various platforms, it is a wonder it isn't buggy, but it is really very dependable and works better than my old (OS 9 only) scanner software that came with my scanner. My hat is off to Hamrick.
(Version 8.4.07)