i have an issue with safecss :
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(285): <source info not available>
[INFO] com.google.gwt.dev.jjs.ast.JPermutationDependentValue
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(285): <source info not available>
[INFO] com.google.gwt.dev.jjs.ast.JBinaryOperation
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(285): <source info not available>
[INFO] com.google.gwt.dev.jjs.ast.JBinaryOperation
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(285): <source info not available>
[INFO] com.google.gwt.dev.jjs.ast.JExpressionStatement
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(284): <source info not available>
[INFO] com.google.gwt.dev.jjs.ast.JBlock
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(284): <source info not available>
[INFO] com.google.gwt.dev.jjs.ast.JMethodBody
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(284): org.gwtproject.safecss.shared.SafeStylesHostedModeUtils.setForceCheckValidStyleFromProperty()V
[INFO] com.google.gwt.dev.jjs.ast.JMethod
[INFO] [ERROR] at SafeStylesHostedModeUtils.java(30): org.gwtproject.safecss.shared.SafeStylesHostedModeUtils (extends Object)
[INFO] com.google.gwt.dev.jjs.ast.JClassType
[INFO] [ERROR] at Unknown(0): <JProgram>
[INFO] com.google.gwt.dev.jjs.ast.JProgram
[INFO] [ERROR] Unrecoverable exception, shutting down
and what is strange is that org.gwtproject.safecss.SafeCss contains
<define-configuration-property name="org.gwtproject.safecss.ForceCheckValidStyles" is-multi-valued="false"/>
looks like i missed something trivial