Hi,
Just FYI, I have used Eraser v 5.6a (1-2003) and 5.7 (7-2003) on Windows 98 (SE) in the not too distant past. And they both seemed to work OK.
Admittedly, it was a short project to work on two machines, but seemed fine.
(the version 5.6a and 5.7 I've used are versions I had downloaded ages ago... )