Fix #46

Export-Excel.ps1

@@ -54,16 +54,12 @@ function Export-Excel {
             $ws  = $pkg | Add-WorkSheet -WorkSheetname $WorkSheetname -NoClobber:$NoClobber
 
             foreach($format in $ConditionalFormat ) {
-                #$obj = [PSCustomObject]@{
-                #    Address   = $Address
-                #    Formatter = $ConditionalFormat
-                #    IconType  = $bp.IconType
-                #}
-
                 $target = "Add$($format.Formatter)"
                 $rule = ($ws.ConditionalFormatting).$target($format.Address, $format.IconType)
                 $rule.Reverse = $format.Reverse
             }
+            # Force at least one cell value
+            $ws.Cells[1, 1].Value = ""
 
             $Row = 1
             if($Title) {