I use the Windows version and I AM having the same problem. So it's not just you.
I'm actually using it now on my 32-bit Mac in OS X using Soylatte. To launch it, I had to use Terminal in X11, so when the connection crashed, this came up:
[Fatal Error] :1:11304: The value of attribute "g" associated with an element type "null" must not contain the '<' character.
org.xml.sax.SAXParseException: The value of attribute "g" associated with an element type "null" must not contain the '<' character.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:239)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
at com.a.g.c(Unknown Source)
at com.a.i.run(Unknown Source)
It happens every time.