[oXygen-user] fo processing error with xep

[Ted Kuster]

Can anyone suggest where to begin debugging this? I don't yet have the 
XSL chops to do more than vaguely guess what's happening in the lines 
referenced in the error messages. I'm running Oxygen 11 in Eclipse 3.6 
on Ubuntu 9.10. (And cross-posting to the XEP list.) Here's what seems 
to be the relevant output:

transform.topic2fo:
[dita-version] Search finished
[detect-lang] Lang search finished
     [echo] Using document.locale=en_US
     [echo]        
[index-preprocess] [INFO] IBM ICU4J Collator is not found. Default Java 
Collator will be used
[index-preprocess] [INFO] IBM ICU4J Collator is not found. Default Java 
Collator will be used
     [java] [ERROR] Topic reference (href : #null) not found !
     [java] [ERROR] Reference may be incorrect. Please correct your 
ditamap or bookmap file.
     [java] Processing terminated by xsl:message at line 110 in 
root-processing.xsl

BUILD FAILED
/home/tkuster/eclipse/plugins/com.oxygenxml.author_11.1.0/frameworks/dita/DITA-OT/build.xml:59: 
The following error occurred while executing this line:
/home/tkuster/eclipse/plugins/com.oxygenxml.author_11.1.0/frameworks/dita/DITA-OT/build.xml:394: 
The following error occurred while executing this line:
/home/tkuster/eclipse/plugins/com.oxygenxml.author_11.1.0/frameworks/dita/DITA-OT/demo/fo/build.xml:180: 
The following error occurred while executing this line:
/home/tkuster/eclipse/plugins/com.oxygenxml.author_11.1.0/frameworks/dita/DITA-OT/demo/fo/build.xml:308: 
The following error occurred while executing this line:
/home/tkuster/eclipse/plugins/com.oxygenxml.author_11.1.0/frameworks/dita/DITA-OT/demo/fo/build.xml:254: 
Java returned: 1

Many thanks for any suggestions.
Ted Kuster
CollabNet