Table rows not processed: In an InputScript I use the following procedure: in an SAP table I mark the 1st row, then process this row and return to the table, then mark the second row and process it, and so on. When I look at the result I see that rows 1,3,5,7,... have been processed but not 2,4,.... Can this be a bug in GuiXT or is the error in my InputScript?

Probably the SAP application no longer shows the processed table row when you return to the table display, so that row 2 is actually row 3 of the previously displayed table. Which for your InputScirpt means:  Always select row 1 until the table is empty.