mscrm 2011 online after update rollup 12

Dear all;:

after updates of mscrm 2011 online in jan 2013 which is roll up 12 i am getting the following error when closing or saving the form 

<CrmScriptErrorReport>
  <ReportVersion>1.0</ReportVersion>
  <ScriptErrorDetails>
   <Message>Unable to get value of the property 'toString': object is null or undefined</Message>
   <Line>1</Line>
   <URL>/_static/_common/scripts/main.js?ver=-1835701929</URL>
   <PageURL>/main.aspx?skipnotification=true</PageURL>
   <Function>anonymous($p0,$p1){try{if(!IsNull($p0)){var$v_0=String.format("Timestamp:Loaded={0},Updated={1},Saved={2}{3}{4}",this.$a_3.toString(),!IsNull(this.$M_3)?this.$M_3.toString():(newDate).toString(),!IsNull(this.$L_3)?this.$L_3.toString():"",this.$2_3,$p0);Ms</Function>
   <CallStack>
    <Function>anonymous($p0,$p1){try{if(!IsNull($p0)){var$v_0=String.format("Timestamp:Loaded={0},Updated={1},Saved={2}{3}{4}",this.$a_3.toString(),!IsNull(this.$M_3)?this.$M_3.toString():(newDate).toString(),!IsNull(this.$L_3)?this.$L_3.toString():"",this.$2_3,$p0);Mscrm.CrmLocalStorage.setItem(this.$R_3,$v_0)}}catch($$e_3){var$v_1=String.format("Timestamp:Loaded={0},Updated={1},Saved={2}{3}{4}",this.$a_3.toString(),this.$M_3.toString(),!IsNull(this.$L_3)?this.$L_3.toString():"",this.$2_3,$p1);Mscrm.CrmLocalStorage.setItem(this.$R_3,$v_1)}}</Function>
   </CallStack>
  </ScriptErrorDetails>
  <ClientInformation>
   <BrowserUserAgent>Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; BRI/2; InfoPath.3; .NET4.0E; Zune 4.7; .NET CLR 1.1.4322; AskTbORJ/5.15.2.23037; MS-RTC EA 2; MALC)</BrowserUserAgent>
   <BrowserLanguage>en-us</BrowserLanguage>
   <SystemLanguage>da</SystemLanguage>
   <UserLanguage>da</UserLanguage>
   <ScreenResolution>1920x1080</ScreenResolution>
   <ClientName>Web</ClientName>
   <ClientTime>2013-01-25T10:18:40</ClientTime>
  </ClientInformation>
  <ServerInformation>
    <OrgLanguage>1030</OrgLanguage>
    <OrgCulture>1030</OrgCulture>
    <UserLanguage>1030</UserLanguage>
    <UserCulture>1030</UserCulture>
    
    <CRMVersion>5.0.9690.3233</CRMVersion>
  </ServerInformation>
</CrmScriptErrorReport>