CRM 2011 - JScript Error on Form Load (Errors On Page)

There are many reasons and causes of client side JScript errors, any line of code that has insufficient exception handling can result in an error message, for example when you are trying to call a function onload that doesn't exist. As you can see below, it's clear what the error is.

However there are scripting errors that are much harder to identify, which are displayed via the "Microsoft Dynamics CRM has encountered an error." dialog. Typically you will also get a "Errors on page" at the bottom left hand corner of your IE window:

Example Error
A recent example is where a colleague was experiencing errors after installing Rollup 12 and 13. The data being sent to Microsoft is displayed below:

Data that will be sent to Microsoft

1. <CrmScriptErrorReport>
2.   <ReportVersion>1.0</ReportVersion>
3.   <ScriptErrorDetails>
4.     <Message>Syntax error</Message>
5.     <Line>306073745</Line>
6.     <URL>/userdefined/edit.aspx?_gridType=4200&etc=4207&id=%7b998C4134-EAB3-E211-9A96-005056BC08B2%7d&pagemode=iframe&preloadcache=1368438373440&rskey=68511477</URL>
7.     <PageURL>/userdefined/edit.aspx?_gridType=4200&etc=4207&id=%7b998C4134-EAB3-E211-9A96-005056BC08B2%7d&pagemode=iframe&preloadcache=1368438373440&rskey=68511477</PageURL>
8.     <Function>anonymous(container,scriptContent,id){if(IsNull(container))container=this.get_headElement();var$v_0=container.ownerDocument.createElement("script");container.appendChild($v_0);!isNullOrEmptyString(id)&&$v_0.setAttribute("id",id);$v_0.setAttribute("type","</Function>
9.     <CallStack>
10.       <Function>anonymous(container,scriptContent,id){if(IsNull(container))container=this.get_headElement();var$v_0=container.ownerDocument.createElement("script");container.appendChild($v_0);!isNullOrEmptyString(id)&&$v_0.setAttribute("id",id);$v_0.setAttribute("type","text/javascript");$v_0.text=scriptContent}</Function>
11.       <Function>anonymous(container,scriptFile){var$v_0=scriptFile.toString();if(this.$4V_1($v_0))return;var$v_1=this.fetchExternalFile($v_0);this.addIncludeInline(container,$v_1,$v_0)}</Function>
12.       <Function>anonymous(uri,useInlineScripts,scriptLoaded){if(uri.get_path().toUpperCase()==="/_STATIC/_COMMON/SCRIPTS/GLOBAL.JS")uri=Mscrm.CrmUri.create("/_common/global.ashx");if(useInlineScripts)Mscrm.CrmHeader.get_scriptLoader().addIncludeExternalSync(null,uri);elseMscrm.CrmHeader.get_scriptLoader().addIncludeExternalCallback(null,uri,scriptLoaded)}</Function>
13.       <Function>
14.         anonymous($p0,$p1,$p2,$p3){Mscrm.CrmHeader.setScriptFile(Mscrm.CrmUri.create($p1),true);for(var$v_0=window,$v_1=$p0.split("."),$v_2=0;$v_2<$v_1.length;$v_2++)if($v_0)$v_0=$v_0=""[$v_1=""[$v_2=""]];if=""(!IsNull=""($v_0="")&&typeof$v_0===Mscrm.TypeNames.functionType){var$v_3=this.$CN_1($p2,$p3);return$v_0.apply(null,$v_3)}returnnull}
15.       </Function>
16.       <Function>anonymous($p0,$p1){var$v_0=this.$9w_1($p0.FunctionName,$p0.Library,$p0.Parameters,null);if(!IsNull($v_0)&&typeof$v_0===Mscrm.TypeNames.booleanType)return$v_0;elsereturn$p1}</Function>
17.       <Function>anonymous($p0){if(IsNull($p0))returnfalse;var$v_0=$p0.DefaultValue;switch($p0.RuleType){case8:$v_0=this.$Cz_1($p0);break;case1:$v_0=this.$D2_1($p0);break;case7:$v_0=this.$D3_1($p0,$p0.DefaultValue);break;case4:$v_0=this.$D4_1($p0,$p0.DefaultValue);break;case16:$v_0=this.$D5_1($p0);break;case2:$v_0=this.$D6_1($p0);break;case10:$v_0=this.$D7_1($p0);break;case19:$v_0=this.$D8_1($p0,$p0.DefaultValue);break;case17:$v_0=this.$D9_1($p0);break;case12:$v_0=this.$DA_1($p0);break;case6:$v_0=this.$D1_1($p0,$p0.DefaultValue);break;case5:$v_0=this.$DB_1($p0,$p0.DefaultValue);break;case11:$v_0=this.$DC_1($p0);break;case3:$v_0=this.$DD_1($p0,$p0.DefaultValue);break}if(IsNull($v_0))$v_0=IsNull($p0.DefaultValue)?true:$p0.DefaultValue;if(!IsNull($p0.InvertResult)&&$p0.InvertResult)$v_0=!$v_0;return$v_0}</Function>
18.       <Function>
19.         anonymous($p0,$p1){var$v_0=this.getEnableRuleDefinition($p0,$p1);if(IsNull($v_0)||IsNull($v_0.Rules)||!$v_0.Rules.length)returntrue;for(var$v_1=true,$v_2=0;$v_1&&$v_2<$v_0.Rules.length;$v_2++)$v_1=$"v_1"&&this.$9v_1($v_0.Rules[$v_2]);return$v_1}
20.       </Function>
21.       <Function>
22.         anonymous($p0,$p1){if(IsNull(Mscrm.RibbonCommands.enableRules))returntrue;var$v_0=this.getCommandDefinition($p0,$p1);if(IsNull($v_0))returntrue;var$v_1=$v_0.EnableRules;if(IsNull($v_1))returntrue;for(var$v_2=true,$v_3=0;$v_2&&$v_3<$v_1.length;$v_3++){var$v_4=$"v_1"[$v_3=""];if=""(IsNull=""($v_4="")||!$v_4.length="")continue;$v_2=$"v_2"&&this.$D0_1($v_4,$p1)}return$v_2}
23.       </Function>
24.       <Function>anonymous($p0){if(!this.$5T_1)returnfalse;var$v_0=this.parseCommandFromRibbon($p0),$v_1=this.$CH_1($v_0.command,$v_0.entityLogicalName);if($v_1&&!IsNull(this.$H_1.$5A_2[$p0]))$v_1=Mscrm.RibbonNavigationModel.shouldContextGroupBeShown($v_0,this.$H_1);elseif($v_1&&!IsNull(this.$H_1.$28_2[$p0]))$v_1=Mscrm.RibbonNavigationModel.shouldTabBeShown($p0,$v_0,this.$H_1);if(!IsNull(this.$H_1.$28_2[$p0]))this.$H_1.$28_2[$p0]=$v_1;return$v_1}</Function>
25.     </CallStack>
26.   </ScriptErrorDetails>
27.   <ClientInformation>
28.     <BrowserUserAgent>Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)</BrowserUserAgent>
29.     <BrowserLanguage>en-us</BrowserLanguage>
30.     <SystemLanguage>en-gb</SystemLanguage>
31.     <UserLanguage>en-gb</UserLanguage>
32.     <ScreenResolution>1280x1024</ScreenResolution>
33.     <ClientName>Web</ClientName>
34.     <ClientTime>2013-05-13T10:46:58</ClientTime>
35.   </ClientInformation>
36.   <ServerInformation>
37.     <OrgLanguage>1033</OrgLanguage>
38.     <OrgCulture>1033</OrgCulture>
39.     <UserLanguage>1033</UserLanguage>
40.     <UserCulture>1033</UserCulture>
41.     <OrgID>{53547D16-0D2B-4BB4-A05D-3451C1C375D6}</OrgID>
42.     <UserID>{54CDC85A-52B9-E211-891A-005056BC2521}</UserID>
43.     <CRMVersion>5.0.9690.3448</CRMVersion>
44.   </ServerInformation>
45. </CrmScriptErrorReport>

The Issue

After analyzing the call stack, it became apparent that the issue was originating from the Ribbon, relating to enable rules which rely on JScript functions to determine if the users has access to that functionality.

It was pretty obvious after looking at the Ribbon XML, the issue was that their was a missing $webresource prefix from the library paths.

Missing $webresource

1. <EnableRule Id="Imp.Form.Task.DataGroupButtons.EnableRule">
2.   <CustomRule Library="KSR/Script/Common/AccessLibrary.js" FunctionName="KSR.Common.hasUserITSRole" InvertResult="true">
3.   </CustomRule>
4. </EnableRule>
5. <EnableRule Id="Imp.Form.Task.RestrictAccess.EnableRule">
6.   <CustomRule Library="KSR/Script/Common/AccessLibrary.js" FunctionName="KSR.Common.enableRestrictAccessButton">
7.   </CustomRule>
8. </EnableRule>

The Fix

With the $webresource

1. <EnableRule Id="Imp.Form.Task.DataGroupButtons.EnableRule">
2.   <CustomRule Library="$webresource:KSR/Script/Common/AccessLibrary.js" FunctionName="KSR.Common.hasUserITSRole" InvertResult="true">
3.   </CustomRule>
4. </EnableRule>
5. <EnableRule Id="Imp.Form.Task.RestrictAccess.EnableRule">
6.   <CustomRule Library="$webresource:KSR/Script/Common/AccessLibrary.js" FunctionName="KSR.Common.enableRestrictAccessButton">
7.   </CustomRule>
8. </EnableRule>

Hope this helps :)