Taskboard parent view in list mode doesn't handle empty/invalid field configuration correctly

2011-11-18 18:39:31,431 http-8081-5 ERROR lbacila 1119x566x1 sv2lay 127.0.0.1 /secure/TaskBoard.jspa [com.atlassian.velocity.DefaultVelocityManager] MethodInvocationException occurred getting message body from Velocity: java.lang.ArithmeticException: / by zero
java.lang.ArithmeticException: / by zero
       at com.pyxis.greenhopper.jira.configurations.layout.ListLayout.getWidth(ListLayout.java:64)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:234)
       at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:203)
       at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:175)
       at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:220)
       at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:55)
       at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:70)
       at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:55)
       at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:166)
       at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
       at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
       at org.apache.velocity.runtime.directive.Parse.render(Parse.java:181)
       at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
       at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:55)