No checkboxes in grid - IE 6.0.2900

I have an internal application containing a grid with 3 checkbox columns. The checkboxes display fine in Firefox and Internet Explorer 6.0.2600, but don't appear in Internet Explorer 6.0.2900 (the full version is 6.0.2900.2180.xpsp_sp2_gdr.050301-1519).

The checkboxes automatically update the backend when checked. Even though I can't see them, they are getting triggered if I click where they should be.

I am running the 2.0.1 branch of ActiveWidgets.

Here is the code generating the checkboxes:
(grid.UpdateSoftware = 7,
grid.UpdateConfig = 8,
grid.UpdateCSV = 11)

grid.setCellTemplate(new AW.Templates.Checkbox, grid.UpdateSoftware);
grid.setCellTemplate(new AW.Templates.Checkbox, grid.UpdateConfig);
grid.setCellTemplate(new AW.Templates.Checkbox, grid.UpdateCSV);

for (var i = 0; i < grid.getRowCount(); i++) {
grid.setCellValue((grid.getCellText(grid.UpdateSoftware,i) == "1"), grid.UpdateSoftware, i);
grid.setCellText('', grid.UpdateSoftware, i)
grid.setCellValue((grid.getCellText(grid.UpdateConfig,i) == "1"), grid.UpdateConfig, i);
grid.setCellText('', grid.UpdateConfig, i);
grid.setCellValue((grid.getCellText(grid.UpdateCSV,i) == "1"), grid.UpdateCSV, i);
grid.setCellText('', grid.UpdateCSV, i);
}


I'd appreciate any help, thanks.

Here's a way to recreate the problem at home...

I took Alex's complete example of how to implement checkboxes (http://activewidgets.com/javascript.forum.9440.5/checkbox-example.html) and that doesn't work either.

Same deal, you can click in the checkbox column and the value changes, but the checkbox isn't visible.

Works in Firefox and IE 6.0.2600, but not IE 6.0.2900.

Thanks,
Adam