Hi, this one is a bit mysterious. I managed to reproduce it a while ago with a beta version of XP (and fixed it by simply re-installing Hugs), but am unable to reproduce it now when upgrading a vanilla Win 98 install with the RTM version of XP. In the less-than-likely event that it'll tell me something interesting, could you send me a copy of the Prelude.hs WinHugs is failing on + line number? thanks, --sigbjorn btw, It is also worth checking that the uninstall completely deletes the Hugs98/ directory before installing Hugs98 again. ----- Original Message ----- From: YH Chen To: hugs-bugs@haskell.org Sent: Tuesday, March 19, 2002 13:08 Subject: Unable to start WinHugs I recently upgraded from WinME to WinXP, and in doing so, I discovered that I can't start up WinHugs anymore. Whevever I try to do so, the Hugs interpreter window shows up as normal, but with: ERROR - Illegal character escape sequence "\W" . A Hugs popup shows up: FATAL ERROR: Unable to locate prelude. I've tried uninstalling and reinstalling Hugs (I'm using the 12/01 version) but to no avail. I hope the info provided will help you resolve what's wrong and let me run WinHugs again. If you need any more info, please feel free to contact me via this email address.