After updating OE to 6.00.2800.1106, the newsreader function "Reply Group" no
longer works. I click the button and type my reply, but after clicking Send,
a small dialog box with three buttons and a checkbox pops up. But there is
no text on any of these controls. I clicked on all three buttons anyway but
nothing happens ie. the message does not get sent.

The problem does not happen when posting new messages; only when replying to
existing ones.

Any ideas?

Thanks.