Error when crawling pages with Gantt Chart webpart

Problem

You have Gantt chart views in your webparts. During a search crawl, the following messages are logged in ULS.

Microsoft.SharePoint.SPException: This view requires at least Microsoft Internet Explorer 7.0, Mozilla FireFox 3.0, or Apple Safari 3.0.    at Microsoft.SharePoint.WebControls.Gantt.OnLoad(EventArgs e)     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.AddedControl(Control control, Int32 index)     at Microsoft.SharePoint.WebPartPages.ListViewWebPart.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)

Solution

• Open RegEdit on your search server.
• Browse to HKLM\SOFTWARE\Microsoft\Office Server\14.0\Search\Global\Gathering Manager
• Change the UserAgent key from:

Mozilla/4.0 (compatible; MSIE 4.01; Windows NT; MS Search 6.0 Robot)

to this

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT; MS Search 6.0 Robot)

• Finally, restart your crawl servers.