>>Thank you for the feedback and good suggestion. I have changed the code that adds a sheet to the workbook to default this value to True (Show Grid Lines). This was an oversight on my part -- why I am keeping this class as a beta at this time. There are a lot of changes to the code and I want to be fairly certain that it is bug free as much as possible. In the beta version there are two new methods for setting or getting this setting.
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>>Actually this new parameter is only for the method that saves a grid (it takes the value from the grid itself) and not a table directly. So the correction above will retain the grid lines.

>You suggested to set the 6th parameter to True. But when I look at the source code of the method SaveTableToWorkBook I see only 5 parameters. And if I try to pass the 6th parameter as .T., I get error.

>What am I missing?

See my last sentence above -- the new parameter is on the method that saves a grid. This is the method, SaveGridToWorkbook(). I was wrong when I said it was also a parameter on SaveTableToWorkbook(). The beta version that you have will always save without gridlines visible. I have changed the behavior to now default to gridlines being visible.