Seam CVS has been updated to use JBoss Rules (Drools) version 4.0.0 MR2, which requires some changes if you are using either a Seam-managed working memory or Seam security. Here are the migration notes: 1) The number of required jars has been greatly reduced. The following jars are now required to be listed in your application.xml file: antlr-3.0b7.jar drools-compiler-4.0.0.MR2.jar drools-core-4.0.0.MR2.jar janino-2.5.6.jar mvel14-1.2beta16.jar 2) If you are using Seam's ManagedWorkingMemory class, please note that its Unwrap method now returns a StatefulSession instead of a WorkingMemory (StatefulSession now implements the WorkingMemory interface). 3) Rule compilation seems to be a little stricter on syntax. Rule definitions must be terminated with the word "end" (previously "end;" - note the semicolon, was acceptable). It also seems to be a little stricter about white space and line ends also. If your rules no longer compile, check your rule file for extraneous white space or carriage returns/linefeeds. The Seam examples have been updated to work with this new version, so if in doubt, take a look at the examples. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4044557#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...