I getting error when i creating record

Hi  I am getting error when I creating record

Microsoft Dynamics CRM Error Report Contents

<CrmScriptErrorReport>
  <ReportVersion>1.0</ReportVersion>
  <ScriptErrorDetails>
   <Message>'null' is null or not an object</Message>
   <Line>214</Line>
   <URL>/%72423423424241%7D/WebResources/_contract_script</URL>
   <PageURL>/main.aspx?etc=10013&extraqs=%3fetc%3d10013&pagemode=iframe&pagetype=entityrecord</PageURL>
   <Function>retrieveDateCallBack(retrievedateReq)</Function>
   <CallStack>
    <Function>retrieveDateCallBack(retrievedateReq)</Function>
    <Function>anonymous(){retrieveDateCallBack(this);}</Function>
   </CallStack>
  </ScriptErrorDetails>
  <ClientInformation>
   <BrowserUserAgent>Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; MS-RTC LM 8; .NET4.0C; .NET4.0E)</BrowserUserAgent>
   <BrowserLanguage>en-us</BrowserLanguage>
   <SystemLanguage>en-in</SystemLanguage>
   <UserLanguage>en-in</UserLanguage>
   <ScreenResolution>1440x900</ScreenResolution>
   <ClientName>Web</ClientName>
   <ClientTime>2014-07-10T12:06:34</ClientTime>
  </ClientInformation>
  <ServerInformation>
    <OrgLanguage>1033</OrgLanguage>
    <OrgCulture>1033</OrgCulture>
    <UserLanguage>1033</UserLanguage>
    <UserCulture>1033</UserCulture>
    <OrgID>{482834j-1111111111111111111111111111}</OrgID>
    <UserID>{11111111111111111111111111111111}</UserID>
    <CRMVersion>6.0.2.51</CRMVersion>
  </ServerInformation>
</CrmScriptErrorReport>

can anyone guide me about this error.