Hi Mark,

Is it possible that you've performed modifications directly to the modules/mod_cmc/tml/default.php file? The file that you had there is not the same as the file that we distribute with version 4.1.2 you were missing a very important block.

		<div class="row-fluid">

			<?php $fieldsets = $form->getFieldsets('cmc'); ?>



			<?php foreach ($fieldsets as $key => $value): ?>

				<div class="span12">

					<?php $fields = $form->getFieldset($key); ?>



					<?php foreach ($fields as $field) : ?>

						<div class="control-group">

							<div class="control-label">

								<?php echo $field->label; ?>

							</div>

							<div class="controls">

								<?php echo $field->input; ?>

							</div>

						</div>

					<?php endforeach; ?>

				</div>

			<?php endforeach; ?>

		</div>

The cmc fieldset contains the listid. Since this block was removed we were trying to send a request to mailchimp with an empty list_id and mailchimp was complainign with "404 resource not found"

if the div adds some kind of html problems you might just change the classes. You should not remove it!

Regards,
Daniel

P.S. I would appreciate a review over here: https://extensions.joomla.org/extension/cmc/