[Plugin: Simple Taxonomies] Warning: Invalid argument supplied for foreach()

I have the same problem. Anyone know how to fix this? This thread is 2 months old without any reply from the developer.

It might have been caused by a conflict with another plugin. You may try re-uploading the simple-taxonomies plugin and then deactivate and reactivate all other plugins in tandem.

S.K

I am getting the same error on the top of every post – I tried deactivating all plugins and then reactivating only simple-taxonomies but still get the same error. Line 294 reads:

foreach ( $opt['taxonomies'] as $taxonomy ) {

as part of this function:

function yoast_simple_taxonomies_filter( $content, $type ) {
	$opt  = get_option('yoast_simpletax');
	$output = '';
	foreach ( $opt['taxonomies'] as $taxonomy ) {
		$filter = false;
		if ( $type == 'content' && $taxonomy['filter'] ) {
			$filter = true;
		} else if ( $type == 'excerpt' && $taxonomy['filterexcerpt'] ) {
			$filter = true;
		}
		if ( $filter ) {
			$terms = get_the_term_list( $post->ID, $taxonomy['name'], $taxonomy['label'].': ', ', ', '' );
			if ($terms)
				$output .= "\t".'<span class="taxonomy-'.$taxonomy['name'].'">'.$terms."</span><br />\n";
		}
	}
	if ($output != '') {
		$content .= '<div id="yoast-taxonomy">'."\n".$output."\n".'</div>'."\n";
	}
	return $content;
}

Any suggestions how to fix this? Thanks!

as a quick and dirty fix, I’ve put this:

if (!$opt['taxonomies']) return $content;

just before the foreach and the warning is now gone