Why is it so gooddamn hard to compare two god.damn.excel workbooks in windows?
Spreadsheet compare works only once in a blue moon if at all and neither of the shitty ghoulish guides on ms support forums work.

If you've got a spreadsheet that's complicated enough to require such a thing, then the Horse of Robustness and Maintainability has already bolted, moved to the other end of the country, opened a massage parlour and developed a coke habit.