error when occurs only from crm 2011 outlook client but not from on-line

hi all.

i have an entity of type incident called "case"
i added a button called UW
when you press it a jscript updates another entity and a plugin fires.
all this scenario runs perfect!

here is my problem:

-  if i press the UW button (which tirggers jscript + plugin) and then press "resolve case" - i get an error
   this error happens ONLY via the crm outlook add-in 

-  if i do this process via "crm on-line" - no problems at all.

-  if i press "resolve case" from outlook client WITHOUT pressing UW button - no problems at all.


can anybody please help me with an advice ?
i must have a solution for outlook client (telling everyone to work only with "crm on-line" is not an option)

thank you very much.

here is the error i get:

Microsoft Dynamics CRM Error Report Contents

<CrmScriptErrorReport>
  <ReportVersion>1.0</ReportVersion>
  <ScriptErrorDetails>
   <Message>Function expected</Message>
   <Line>1</Line>
   <URL>/main.aspx?etc=112&extraqs=%3f_CreateFromId%3d%257b37D0D311-2E48-E111-8269-1CC1DE085865%257d%26_CreateFromType%3d2%26_gridType%3d112%26etc%3d112%26id%3d%257b297F40B0-1E3E-E211-8C52-984BE17C47FB%257d%26pagemode%3diframe%26preloadcache%3d1354631248978%26rskey%3d820257038&pagetype=entityrecord</URL>
   <PageURL>/main.aspx?etc=112&extraqs=%3f_CreateFromId%3d%257b37D0D311-2E48-E111-8269-1CC1DE085865%257d%26_CreateFromType%3d2%26_gridType%3d112%26etc%3d112%26id%3d%257b297F40B0-1E3E-E211-8C52-984BE17C47FB%257d%26pagemode%3diframe%26preloadcache%3d1354631248978%26rskey%3d820257038&pagetype=entityrecord</PageURL>
   <Function></Function>
   <CallStack>
   </CallStack>
  </ScriptErrorDetails>
  <ClientInformation>
   <BrowserUserAgent>Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; Microsoft Outlook 14.0.6117)</BrowserUserAgent>
   <BrowserLanguage>en-us</BrowserLanguage>
   <SystemLanguage>he</SystemLanguage>
   <UserLanguage>he</UserLanguage>
   <ScreenResolution>1920x1080</ScreenResolution>
   <ClientName>Outlook Laptop - Online</ClientName>
   <ClientTime>2012-12-04T16:28:06</ClientTime>
  </ClientInformation>
  <ServerInformation>
    <OrgLanguage>1033</OrgLanguage>
    <OrgCulture>1033</OrgCulture>
    <UserLanguage>1033</UserLanguage>
    <UserCulture>1033</UserCulture>
    <OrgID>{C9F05F17-143B-4CEF-B70A-9E3D40A7C8A8}</OrgID>
    <UserID>{F581842D-4C31-E111-927F-1CC1DE04E427}</UserID>
    <CRMVersion>5.0.9690.2747</CRMVersion>
  </ServerInformation>
</CrmScriptErrorReport>