DOCBOOK-APPS: parse errors for docbook in XEmacs 21.1.10

[Sven Hartrumpf <sven.hartrumpf@FernUni-Hagen.de>]

When I call "Parse DTD" from psgml (1.2.1 in XEmacs 21.1.10)
for a docbook document starting with
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.1//EN">

I get the following error:

/programs/free/sgmltools-2.0.2c/share/sgml/entities/iso-entities-8879.1986/ISOamsa line 11 col 22 entity ISOamsa
/programs/free/sgmltools-2.0.2c/share/sgml/dtd/docbook/4.1/dbcent.mod line 54 col 9 entity dbcent
/programs/free/sgmltools-2.0.2c/share/sgml/dtd/docbook/4.1/docbook.dtd line 75 col 8 entity BOOK
/home/sven/text/t/t.sgml line 1 col 54 
Delimiter MDC (>) expected; at: "[cularr]"--

The relevant line 11 of ISOamsa is:
<!ENTITY cularr SDATA "[cularr]"--/curvearrowleft A: left curved arrow -->

Any ideas?

Sven