• Added users to MG 3, build 3345
• Exported users using the Tools/Export tool (worked out fine)
• Sterted Tools/Import tool in MG 3, build 3451
• Import failed due to invalid character(s)

Error:
org.xml.sax.SAXParseException: An invalid XML character (Unicode: 0x0) was found in the element content of the document.

org.apache.commons.lang.exception.NestableRuntimeException: org.xml.sax.SAXParseException: An invalid XML character (Unicode: 0x0) was found in the element content of the document.
at info.magnolia.cms.core.ie.DataTransporter.executeImport(DataTransporter.java:202)
at info.magnolia.cms.core.ie.DataTransporter.executeImport(DataTransporter.java:83)
at info.magnolia.cms.servlets.ImportExportServlet.doPost(ImportExportServlet.java:336)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:767)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:423)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:966)
at info.magnolia.cms.filters.MagnoliaManagedFilter$CustomFilterChain.doFilter(MagnoliaManagedFilter.java:80)
at info.magnolia.cms.filters.UnsetContextFilter.doFilter(UnsetContextFilter.java:44)
at info.magnolia.cms.filters.MagnoliaManagedFilter$CustomFilterChain.doFilter(MagnoliaManagedFilter.java:84)
at info.magnolia.cms.security.SecurityFilter.doFilter(SecurityFilter.java:96)
at info.magnolia.cms.filters.MagnoliaManagedFilter$CustomFilterChain.doFilter(MagnoliaManagedFilter.java:84)
at info.magnolia.cms.filters.MultipartRequestFilter.doFilter(MultipartRequestFilter.java:80)
at info.magnolia.cms.filters.MagnoliaManagedFilter$CustomFilterChain.doFilter(MagnoliaManagedFilter.java:84)
at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:66)
at info.magnolia.cms.filters.MagnoliaManagedFilter$CustomFilterChain.doFilter(MagnoliaManagedFilter.java:84)
at info.magnolia.cms.filters.MagnoliaManagedFilter.doFilter(MagnoliaManagedFilter.java:53)