diff --git a/blocks/procedures.js b/blocks/procedures.js
index 71993b950..263d339e5 100644
--- a/blocks/procedures.js
+++ b/blocks/procedures.js
@@ -536,7 +536,10 @@ Blockly.Blocks['procedures_callnoreturn'] = {
       }
     }
     // Add 'with:' if there are parameters.
-    this.getField_('WITH').setVisible(!!this.arguments_.length);
+    var withField = this.getField_('WITH');
+    if (withField) {
+      withField.setVisible(!!this.arguments_.length);
+    }
     // Restore rendering and show the changes.
     this.rendered = savedRendered;
     if (this.rendered) {
diff --git a/blocks_compressed.js b/blocks_compressed.js
index cee5e0234..ca8c96f0a 100644
--- a/blocks_compressed.js
+++ b/blocks_compressed.js
@@ -105,7 +105,7 @@ Blockly.Blocks.procedures_mutatorarg={init:function(){this.setColour(290);this.a
 Blockly.Blocks.procedures_callnoreturn={init:function(){this.setHelpUrl(Blockly.Msg.PROCEDURES_CALLNORETURN_HELPURL);this.setColour(290);this.appendDummyInput().appendField(Blockly.Msg.PROCEDURES_CALLNORETURN_CALL).appendField("","NAME").appendField(Blockly.Msg.PROCEDURES_CALL_BEFORE_PARAMS,"WITH");this.setPreviousStatement(!0);this.setNextStatement(!0);this.arguments_=[];this.quarkArguments_=this.quarkConnections_=null},getProcedureCall:function(){return this.getFieldValue("NAME")},renameProcedure:function(a,
 b){Blockly.Names.equals(a,this.getProcedureCall())&&(this.setFieldValue(b,"NAME"),this.setTooltip((this.outputConnection?Blockly.Msg.PROCEDURES_CALLRETURN_TOOLTIP:Blockly.Msg.PROCEDURES_CALLNORETURN_TOOLTIP).replace("%1",b)))},setProcedureParameters:function(a,b){if(b){if(b.length!=a.length)throw"Error: paramNames and paramIds must be the same length.";this.quarkArguments_||(this.quarkConnections_={},a.join("\n")==this.arguments_.join("\n")?this.quarkArguments_=b:this.quarkArguments_=[]);var c=this.rendered;
 this.rendered=!1;for(var d=this.arguments_.length-1;0<=d;d--){var e=this.getInput("ARG"+d);if(e){var f=e.connection.targetConnection;this.quarkConnections_[this.quarkArguments_[d]]=f;this.removeInput("ARG"+d)}}this.arguments_=[].concat(a);this.quarkArguments_=b;for(d=0;d<this.arguments_.length;d++)if(e=this.appendValueInput("ARG"+d).setAlign(Blockly.ALIGN_RIGHT).appendField(this.arguments_[d]),this.quarkArguments_){var g=this.quarkArguments_[d];g in this.quarkConnections_&&(f=this.quarkConnections_[g],
-!f||f.targetConnection||f.sourceBlock_.workspace!=this.workspace?delete this.quarkConnections_[g]:e.connection.connect(f))}this.getField_("WITH").setVisible(!!this.arguments_.length);(this.rendered=c)&&this.render()}else this.quarkConnections_={},this.quarkArguments_=null},mutationToDom:function(){var a=document.createElement("mutation");a.setAttribute("name",this.getProcedureCall());for(var b=0;b<this.arguments_.length;b++){var c=document.createElement("arg");c.setAttribute("name",this.arguments_[b]);
+!f||f.targetConnection||f.sourceBlock_.workspace!=this.workspace?delete this.quarkConnections_[g]:e.connection.connect(f))}(d=this.getField_("WITH"))&&d.setVisible(!!this.arguments_.length);(this.rendered=c)&&this.render()}else this.quarkConnections_={},this.quarkArguments_=null},mutationToDom:function(){var a=document.createElement("mutation");a.setAttribute("name",this.getProcedureCall());for(var b=0;b<this.arguments_.length;b++){var c=document.createElement("arg");c.setAttribute("name",this.arguments_[b]);
 a.appendChild(c)}return a},domToMutation:function(a){var b=a.getAttribute("name");this.setFieldValue(b,"NAME");this.setTooltip((this.outputConnection?Blockly.Msg.PROCEDURES_CALLRETURN_TOOLTIP:Blockly.Msg.PROCEDURES_CALLNORETURN_TOOLTIP).replace("%1",b));if((b=Blockly.Procedures.getDefinition(b,this.workspace))&&b.mutator.isVisible())this.setProcedureParameters(b.arguments_,b.paramIds_);else{this.arguments_=[];for(var b=0,c;c=a.childNodes[b];b++)"arg"==c.nodeName.toLowerCase()&&this.arguments_.push(c.getAttribute("name"));
 this.setProcedureParameters(this.arguments_,this.arguments_)}},renameVar:function(a,b){for(var c=0;c<this.arguments_.length;c++)Blockly.Names.equals(a,this.arguments_[c])&&(this.arguments_[c]=b,this.getInput("ARG"+c).fieldRow[0].setText(b))},customContextMenu:function(a){var b={enabled:!0};b.text=Blockly.Msg.PROCEDURES_HIGHLIGHT_DEF;var c=this.getProcedureCall(),d=this.workspace;b.callback=function(){var a=Blockly.Procedures.getDefinition(c,d);a&&a.select()};a.push(b)}};
 Blockly.Blocks.procedures_callreturn={init:function(){this.setHelpUrl(Blockly.Msg.PROCEDURES_CALLRETURN_HELPURL);this.setColour(290);this.appendDummyInput().appendField(Blockly.Msg.PROCEDURES_CALLRETURN_CALL).appendField("","NAME").appendField(Blockly.Msg.PROCEDURES_CALL_BEFORE_PARAMS,"WITH");this.setOutput(!0);this.arguments_=[];this.quarkArguments_=this.quarkConnections_=null},getProcedureCall:Blockly.Blocks.procedures_callnoreturn.getProcedureCall,renameProcedure:Blockly.Blocks.procedures_callnoreturn.renameProcedure,