[xwiki-users] migration failed from 1.0 to 1.2m1 with postgresql database

hi, I'm working on upgrading our xwiki form 1.0 to the 1.2m1, we using tomcat5.5 with postgresql8.0.8 database, everything configure in utf8, and we need keep the data. after I configure the hibernate, xwikicfg, webxml I start tomcat but I receive an exception when I getting into the page: type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Error number 3 in 0: Could not initialize main XWiki context Wrapped Exception: Error number 3005 in 3: Migration failed Wrapped Exception: Error number 13021 in 13: Exception while constructing document archive Wrapped Exception: Error number 2002 in 2: Error parsing xml Wrapped Exception: Error on line 173 of document : Character reference "&#7" is an invalid XML character. Nested exception: Character reference "&#7" is an invalid XML character. org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535) org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) javax.servlet.http.HttpServlet.service(HttpServlet.java:690) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117) root cause com.xpn.xwiki.XWikiException: Error number 3 in 0: Could not initialize main XWiki context Wrapped Exception: Error number 3005 in 3: Migration failed Wrapped Exception: Error number 13021 in 13: Exception while constructing document archive Wrapped Exception: Error number 2002 in 2: Error parsing xml Wrapped Exception: Error on line 173 of document : Character reference "&#7" is an invalid XML character. Nested exception: Character reference "&#7" is an invalid XML character. com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:250) com.xpn.xwiki.XWiki.getXWiki(XWiki.java:400) com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:94) org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) javax.servlet.http.HttpServlet.service(HttpServlet.java:690) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117) note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs. it shows in the exception that there was migration problem with parsing some xml file on some symbols.... but I really do not know what does that mean and how I can solve it. anyone have ideas or samiliar problem experienced can give a help? regards, muzi