IE 6&7: Error when editing cell properties in table

[Jakub Ś]

Happens in IE6 & IE7

In "replace by class" sample, paste the following code:

<p>
	&nbsp;</p>
<table border="1" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td style="width: 197px">
				<p>
					Ewrew</p>
			</td>
			<td style="width: 197px">
				<p>
					435</p>
			</td>
			<td style="width: 197px">
				<p>
					43543543</p>
			</td>
		</tr>
		<tr>
			<td style="width: 197px">
				<p>
					Werw</p>
			</td>
			<td style="width: 197px">
				<p>
					435</p>
			</td>
			<td style="width: 197px">
				<p>
					click here</p>
			</td>
		</tr>
		<tr>
			<td style="width: 197px">
				<p>
					435</p>
			</td>
			<td style="width: 197px">
				<p>
					435435</p>
			</td>
			<td style="width: 197px">
				<p>
					ertretretre</p>
			</td>
		</tr>
	</tbody>
</table>

Click with RBM on cell with value "click here" (DON'T CLICK WITH LBM) and choose cell -> cell properties...

Result: the error is displayed: 'null' is null or not an object

 function getSelectedCells( selection )
 {
      // Walker will try to split text nodes, which will make the current selection
      // invalid. So save bookmarks before doing anything.
     var bookmarks = selection.createBookmarks(); // <-------

     tabletools/plugin.js, line 14

[Wiktor Walc]

On my computer it happens straight after the dialog loads, without having to press the "Ok" button.