[plt-scheme] Help recovering corrupted DrScheme editor file

Hi.
I'm not sure how it happened, but I have a file I can no longer open in 
DrScheme (version 4.2 [3m], Windows XP). I see the following error trace in 
a popup window when I try to open it:

insert-file in text%: error loading the file

 === context ===
C:\Program Files\PLT\collects\mred\private\wxme\text.ss:2538:2: 
do-insert-file method in text%
C:\Program Files\PLT\collects\mred\private\editor.ss:177:35
C:\Program Files\PLT\collects\mred\private\editor.ss:171:29
C:\Program Files\PLT\collects\drscheme\private\unit.ss:2107:8: 
change-to-file method in ...heme/private/unit.ss:1382:6
C:\Program Files\PLT\collects\drscheme\private\unit.ss:4490:8
C:\Program Files\PLT\collects\scheme\private\contract-arrow.ss:1364:3
C:\Program Files\PLT\collects\scheme\private\contract-arrow.ss:1364:3
C:\Program Files\PLT\collects\framework\private\handler.ss:202:0: 
open-recent-list-item
C:\Program Files\PLT\collects\mred\private\mrmenu.ss:244:17: command method 
in basic-selectable-menu-item%
C:\Program Files\PLT\collects\scheme\private\more-scheme.ss:155:2: 
call-with-break-parameterization
C:\Program Files\PLT\collects\scheme\private\more-scheme.ss:271:2: 
call-with-exception-handler


I've attached the file. Can anybody help me recover it? And do you have any 
ideas what may have caused the corruption, so I can avoid it in the future?
Thanks.
-Eddie Sullivan
-------------- next part --------------
A non-text attachment was scrubbed...
Name: server-util.scm
Type: application/octet-stream
Size: 27517 bytes
Desc: not available
URL: <http://lists.racket-lang.org/users/archive/attachments/20090630/cc2cb656/attachment.obj>