Installation failure on Windows NT

Problem with the installation of the latest release
(jedit40pre5install.jar) on Windows NT using jdk 1.3.1.
Here is install.log:
jEditLauncher logging starting by module Mon., Feb.
18, 2002 at 02:33:49PM
2002-02-18 14:33:49.10 Message : Commencing
install. . . .
2002-02-18 14:33:49.11 Debug : Version 3.2 found
false, version 4.0 found false
2002-02-18 14:33:49.11 Debug : Searching for
C:\Program Files\jEdit 4.0pre5\jeshlstb.dl_
2002-02-18 14:33:49.11 Debug : Found C:\Program
Files\jEdit 4.0pre5\jeshlstb.dl_
2002-02-18 14:33:49.11 Debug : Using jeshlstb.dl_
for name of context menu handler.
2002-02-18 14:33:49.11 Debug : Renaming shell
extension to jeshlstb.dll.
2002-02-18 14:33:49.15 Debug : Rename failed, error
code 2.
2002-02-18 14:33:49.15 Notice : Rename failed:
reboot required.
2002-02-18 14:33:49.20 Message : Commencing
installation of registry entires. . . .
2002-02-18 14:33:49.20 Message : Registering
C:\Program Files\jEdit 4.0pre5\jeservps.dll. . .
2002-02-18 14:33:49.50 Message : Registration
succeeded.
2002-02-18 14:33:49.50 Message : Registering
uninstall data for Add/Remove programs...
2002-02-18 14:33:49.50 Debug : Found uninstall key
2002-02-18 14:33:49.51 Debug : UninstallString OK.
2002-02-18 14:33:49.51 Debug : Install Path OK.
2002-02-18 14:33:49.51 Debug : Display Icon OK.
2002-02-18 14:33:49.51 Message : Uninstall
registration succeeded.
2002-02-18 14:33:49.51 Message : Registering
C:\Program Files\jEdit 4.0pre5\jeditsrv.exe. . .
2002-02-18 14:33:49.61 Message : Registration
succeeded.
2002-02-18 14:33:49.61 Message : Registering
C:\Program Files\jEdit 4.0pre5\jeshlstb.dl_. . .
2002-02-18 14:33:49.61 Error : Registration failed.
jEditLauncher logging finished by module Mon., Feb.
18, 2002 at 02:33:49PM