Index: src/main/java/org/apache/maven/plugin/jar/JarSignMojo.java
===================================================================
--- src/main/java/org/apache/maven/plugin/jar/JarSignMojo.java	(Revision 510866)
+++ src/main/java/org/apache/maven/plugin/jar/JarSignMojo.java	(Arbeitskopie)
@@ -216,7 +216,15 @@
         if ( signedJarFile.exists() )
         {
             verifyMojo.setErrorWhenNotSigned( false );
-            verifyMojo.execute();
+            try
+            {
+                verifyMojo.execute();
+            }
+
+            catch( MojoExecutionException e )
+            {
+                getLog().info( "error '" + e.toString() + "' during signature verification of file: " + getJarFile().getAbsolutePath() );
+            }
         }
 
         if ( verifyMojo.isSigned() )
@@ -372,7 +380,7 @@
             if ( fileDir != null )
             { // not a relative path
                 boolean mkdirs = fileDir.mkdirs();
-                getLog().debug( "mdkirs: " + mkdirs + " " + fileDir );
+                getLog().debug( "mkdirs: " + mkdirs + " " + fileDir );
             }
         }
     }