We looked into this issue today (without access to a Win98/ME box though). The conclusion, I think, is that: - rawSystem is wrongly escaping backslashes before executing the command. - NT-derived flavours of Windows are more forgiving than Win95-derived Windows when it comes to multiple backslashes used as directory separators. There's an easy fix (patch attached). If anyone would like to test the patch and let us know if it helps, that would be greatly appreciated. Cheers, Simon