compass watch compiles once, fails to notice further changes

Question

I work with SASS + Compass on Windows 7. I recently upgraded SASS from 3.2.10 to 3.4.2 and Compass from 0.12.2 to 1.0.1. I did the upgrade by uninstalling the old versions and i

Answer 1

Turns out the latest version of Compass was the culprit. I uninstalled it and installed version 1.0.0 alpha 13 (I left Sass as is - latest version 3.4.2).

Ran compass watch but that compiled once and terminated itself with a "LoadError on line ['53'] of C: cannot load such file -- wdm..."

I switched to compass watch --poll and now everything is back to normal - Compass watches, compiles, watches, compiles...