Error formatting macro: snippet

[Gert Vanthienen]

L.S.,

Some of our documentation pages use Confluence's snippet macro to 
include code sample (e.g. 
http://incubator.apache.org/servicemix/ftp.html).  Currently, this macro 
doesn't seem to work any more:
   Error formatting macro: snippet: java.lang.IllegalArgumentException: 
Invalid url: must begin with a configured prefix.

We're not alone, apparently the Struts team has the same problem (e.g. 
http://struts.apache.org/2.0.5/docs/conversion-validator.html).  A quick 
search on the web seems to indicate that this is some kind of 
confguration problem with the snippet macro.  Who can administer the 
Confluence instance that hosts our website to resolve this issue?


Gert