Cannot get the list schema column property from the SharePoint List
You will get this popup alert (error message) when you try to export list to a spreadsheet (owssvr.iqy) when the column of a "Date and Time" feild is corrupted. The only fix I have found is to covert the "Date and Time" field to a "Single line of text" then back to a "Date and Time" field.
Microsoft, please fix this.