Unable to display the web part error - when try to insert an image in a content editor webpart

Hello everyone,

I ran into an issue and can't insert any image on content editor webparts in publishing sites. Error message shows in the UI -

"Unable to display this web part. To troubleshoot this problem, open the web page in....". ULS logs show below errors but I'm not able to find any clue so far. Anyone has any suggestion what may have caused this?

Here are few facts / assumptions:

• I can reproduce this issue in different subsites and in different farms. 
• Content databases where upgraded to SPS 2010 (from 2007).
• Sites aren't visually upgraded but I've tried upgrading to 2010 look without any luck. Also tried creating new site all together.
• This issue just started this week - seems like not directly related to the upgrade (which happened a month ago) 
• It almost seems to me the site hierarchy is corrupted somehow but I can navigate through the site content and structure without any issue.
  

Appreciate any feedback!

07/22/2013 11:46:03.16	w3wp.exe (0x2640)	0x1970	SharePoint Foundation	General	90hv	Unexpected	Detected use of SPRequest for previously closed SPWeb object.  Please close SPWeb objects when you are done with all objects obtained from them, but not before.  Stack trace:    at 
Microsoft.SharePoint.SPWeb.get_ParentWeb()     at Microsoft.Office.DocumentManagement.MetadataNavigation.MetadataNavigationContext.UpdateSelectedPathWithWeb()  

   at Microsoft.Office.DocumentManagement.MetadataNavigation.MetadataNavigationContext.InitializeSelectedPathAndTreeValues(NameValueCollection queryString)     

at Microsoft.Office.DocumentManagement.MetadataNavigation.MetadataNavigationContext.get_SelectedNodePath()     at 

ASP._layouts_assetportalbrowser_aspx.CallSetLoc()     at System.EventHandler.Invoke(Object sender, EventArgs e)     at System.Web.UI.Control.OnDataBinding

(EventArgs e)     at Microsoft.SharePoint.WebPartPages.WebPart.OnDataBinding(EventArgs e)     at 

Microsoft.SharePoint.WebPartPages.DataFormWebPart.PerformSelect()     at Microsoft.SharePoint.WebPartPages.DataFormWebPart.DataBind()     at 

Microsoft.SharePoint.WebPartPages.DataFormWebPart.EnsureDataBound()     at Microsoft.SharePoint.WebPartPages.DataFormWebPart.CreateChildControls()     at 

Microsoft.SharePoint.WebPartPages.BaseXsltListWebPart.CreateChildControls()     at Microsoft.SharePoint.WebPartPages.WebPartMobileAdapter.CreateChildControls() 

    at System.Web.UI.Control.EnsureChildControls()     at System.Web.UI.Control.PreRenderRecursiveInternal()     at 

System.Web.UI.Control.PreRenderRecursiveInternal()     at System.Web.UI.Control.PreRenderRecursiveInternal()     at 

System.Web.UI.Control.PreRenderRecursiveInternal()     at System.Web.UI.Control.PreRenderRecursiveInternal()     at 

System.Web.UI.Control.PreRenderRecursiveInternal()     at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean 

includeStagesAfterAsyncPoint)     at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)     at 

System.Web.UI.Page.ProcessRequest()     at System.Web.UI.Page.ProcessRequest(HttpContext context)     at ASP._layouts_assetportalbrowser_aspx.ProcessRequest

(HttpContext context)     at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()     at 

System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)     at System.Web.HttpApplication.PipelineStepManager.ResumeSteps

(Exception error)     at System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb)     at 

System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)     at 

System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)     

at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)     at 

System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)     

at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)	

85d9b190-e23f-4798-aa10-5707f2010c9f


07/22/2013 11:46:04.13	w3wp.exe (0x2640)	0x1970	SharePoint Foundation	Web Parts	89a1	High	Error while executing web part: 

System.NullReferenceException: Object reference not set to an instance of an object.     at System.Xml.Xsl.XslCompiledTransform.Load(MethodInfo executeMethod, 

Byte[] queryData, Type[] earlyBoundTypes)     at Microsoft.Xslt.STransform.GetCompiledTransform()     at 

Microsoft.SharePoint.WebPartPages.BaseXsltListWebPart.LoadXslCompiledTransform(WSSXmlUrlResolver someXmlResolver)     at 

Microsoft.SharePoint.WebPartPages.DataFormWebPart.GetXslCompiledTransform()     at 

Microsoft.SharePoint.WebPartPages.DataFormWebPart.PrepareAndPerformTransform(Boolean bDeferExecuteTransform)	85d9b190-e23f-4798-aa10-5707f2010c9f

BlueSky2010
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