Hi,I have weird issue with deletion of list item. whenever I try either to delete or edit an item of a list an page with following message. Server Error in '/' Application. Cannot complete this action.Please try again. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Runtime.InteropServices.COMException: Cannot complete this action.Please try again.Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [COMException (0x80004005): Cannot complete this action. Please try again.] Microsoft.SharePoint.Library.SPRequestInternalClass.DeleteItem(String bstrUrl, String bstrListName, Int32 lID, UInt32 dwDeleteOp, Guid& pgDeleteTransactionId) +0 Microsoft.SharePoint.Library.SPRequest.DeleteItem(String bstrUrl, String bstrListName, Int32 lID, UInt32 dwDeleteOp, Guid& pgDeleteTransactionId) +229 [SPException: Cannot complete this action. Please try again.] Microsoft.SharePoint.Library.SPRequest.DeleteItem(String bstrUrl, String bstrListName, Int32 lID, UInt32 dwDeleteOp, Guid& pgDeleteTransactionId) +337 Microsoft.SharePoint.SPListItem.DeleteCore(DeleteOp deleteOp) +690 Microsoft.SharePoint.SPListItem.Recycle() +57 Microsoft.SharePoint.WebControls.DeleteItemButton.DeleteItem() +917 Microsoft.SharePoint.WebControls.DeleteItemButton.OnClick(EventArgs e) +55 Microsoft.SharePoint.WebControls.SPLinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +116 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +29 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2981 Can anyone please let me the solution for this?Regards,RKRadhakrishna

This might happen due to a malformed query (CAML) in the site. Trying checking the different queries used and remove them one by one to see if that resolves the issue.Thanks,Dip