when changing form in crm send me the following error
<CrmScriptErrorReport>
<ReportVersion>1.0</ReportVersion>
<ScriptErrorDetails>
<Message>No se puede obtener la propiedad 'uniqueId' de referencia nula o sin definir</Message>
<Line>1</Line>
<URL>/main.aspx?etc=112&extraqs=%3f_CreateFromId%3d%257bCB99A7E3-61AF-E111-B1CD-3C4A92E64481%257d%26_CreateFromType%3d1%26_gridType%3d112%26etc%3d112%26id%3d%257bF1313668-DA59-E311-BA7A-3C4A92E64481%257d%26rskey%3d435849305&pagemode=iframe&pagetype=entityrecord&rskey=435849305</URL>
<PageURL>/main.aspx?etc=112&extraqs=%3f_CreateFromId%3d%257bCB99A7E3-61AF-E111-B1CD-3C4A92E64481%257d%26_CreateFromType%3d1%26_gridType%3d112%26etc%3d112%26id%3d%257bF1313668-DA59-E311-BA7A-3C4A92E64481%257d%26rskey%3d435849305&pagemode=iframe&pagetype=entityrecord&rskey=435849305</PageURL>
<Function>anonymous(targetObj,eventName){if(typeoftargetObj.uniqueId==="undefined"||targetObj.uniqueId==null||targetObj.uniqueId==-1)return;varkey=targetObj.uniqueId.toString();if(typeofwindow.closureEvents==="undefined"||typeofwindow.closureEvents[key]==="undefine</Function>
<CallStack>
<Function>anonymous(targetObj,eventName){if(typeoftargetObj.uniqueId==="undefined"||targetObj.uniqueId==null||targetObj.uniqueId==-1)return;varkey=targetObj.uniqueId.toString();if(typeofwindow.closureEvents==="undefined"||typeofwindow.closureEvents[key]==="undefined")return;varlist=window.closureEvents[key];if(deleteFromList(list,key,eventName))return;if(eventName=="mouseover")eventName="mouseenter";elseif(eventName=="mouseenter")eventName="mouseover";elseif(eventName=="mouseleave")eventName="mouseout";elseif(eventName=="mouseout")eventName="mouseleave";elsereturn;deleteFromList(list,key,eventName)}</Function>
</CallStack>
</ScriptErrorDetails>
<ClientInformation>
<BrowserUserAgent>Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; MS-RTC LM 8)</BrowserUserAgent>
<BrowserLanguage>es-ES</BrowserLanguage>
<SystemLanguage>es-NI</SystemLanguage>
<UserLanguage>es-NI</UserLanguage>
<ScreenResolution>1366x768</ScreenResolution>
<ClientName>Web</ClientName>
<ClientTime>2014-02-20T16:55:48</ClientTime>
</ClientInformation>
<ServerInformation>
<OrgLanguage>3082</OrgLanguage>
<OrgCulture>21514</OrgCulture>
<UserLanguage>3082</UserLanguage>
<UserCulture>19466</UserCulture>
<OrgID>{451516ED-6F96-E311-A2A1-001CC4ED3D7C}</OrgID>
<UserID>{6529CF29-03DE-DD11-BE85-001F290E68B1}</UserID>
<CRMVersion>6.0.1.61</CRMVersion>
</ServerInformation>
</CrmScriptErrorReport>
Best regards