[SIP Beyond VoIP] entity reference loop

[Juha Heinanen]

i have installed sylkserver related packages from ag projects debian
repo and on some hosts sylkserver starts fine, but on some other hosts i
get these error messages at startup:

Nov  2 19:50:32 rautu sylk-server[16896]: Using SIP SIMPLE SDK version 1.4.2
root at rautu:/home/jh/downloads# Nov  2 19:50:33 rautu sylk-server[16896]: using set_wakeup_fd
Nov  2 19:50:33 rautu sylk-server[16896]: fatal error: failed to create SylkServer: Detected an entity reference loop, line 30, column 38
Nov  2 19:50:33 rautu sylk-server[16896]: Traceback (most recent call last):
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/bin/sylk-server", line 70, in main
Nov  2 19:50:33 rautu sylk-server[16896]:     from sylk.server import SylkServer
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/lib/python2.7/dist-packages/sylk/server.py", line 13, in <module>
Nov  2 19:50:33 rautu sylk-server[16896]:     from sipsimple.account import Account, BonjourAccount, AccountManager
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/lib/python2.7/dist-packages/sipsimple/account/__init__.py", line 29, in <module>
Nov  2 19:50:33 rautu sylk-server[16896]:     from sipsimple.account.xcap import XCAPManager
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/lib/python2.7/dist-packages/sipsimple/account/xcap/__init__.py", line 39, in <module>
Nov  2 19:50:33 rautu sylk-server[16896]:     from sipsimple.payloads import addressbook, commonpolicy, dialogrules, omapolicy, pidf, prescontent, presrules, resourcelists, rlsservices, xcapcaps, xcapdiff
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/lib/python2.7/dist-packages/sipsimple/payloads/xcapdiff.py", line 23, in <module>
Nov  2 19:50:33 rautu sylk-server[16896]:     XCAPDiffDocument.register_namespace(namespace, prefix=None, schema='xcapdiff.xsd')
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/lib/python2.7/dist-packages/sipsimple/payloads/__init__.py", line 201, in register_namespace
Nov  2 19:50:33 rautu sylk-server[16896]:     cls._update_schema()
Nov  2 19:50:33 rautu sylk-server[16896]:   File "/usr/lib/python2.7/dist-packages/sipsimple/payloads/__init__.py", line 134, in _update_schema
Nov  2 19:50:33 rautu sylk-server[16896]:     cls.schema = etree.XMLSchema(etree.XML(schema))
Nov  2 19:50:33 rautu sylk-server[16896]:   File "xmlschema.pxi", line 105, in lxml.etree.XMLSchema.__init__ (src/lxml/lxml.etree.c:132605)
Nov  2 19:50:33 rautu sylk-server[16896]: XMLSchemaParseError: Detected an entity reference loop, line 30, column 38

any idea what might cause the error?

-- juha