Problematic Rewrite Rules

gistfile1.php

		public function filter_rewrite_rules ( $rules ) {
			
			$rule = new RewriteRule( array(
				'name' => 'cwm_display_archives',
				'parse_regex' => '#^archives(?:/page/(?P<page>\d+))?/?$#i',
				'build_str' => 'archives(/page/{$page})',
				'handler' => 'UserThemeHandler',
				'action' => 'display_archives',
				'rule_class' => RewriteRule::RULE_THEME,
				'is_active' => true,
				'description' => 'Display custom archives'
			) );
			
			$rules[] = $rule;
			
			$rule = new RewriteRule( array(
				'name' => 'cwm_display_flickr_thumbnail',
				'parse_regex' => '#^flickr_thumbnail/(?P<guid>\w+)?/?$#i',
				'build_str' => 'flickr_thumbnail/{$guid}',
				'handler' => 'UserThemeHandler',
				'action' => 'display_flickr_thumbnail',
				'rule_class' => RewriteRule::RULE_THEME,
				'is_active' => true,
				'description' => 'Display Flickr thumbnail from local cache',
			) );
			
			$rule = new RewriteRule( array(
				'name' => 'cwm_display_header',
				'parse_regex' => '#^header.json?/?$#i',
				'build_str' => 'header.json',
				'handler' => 'UserThemeHandler',
				'action' => 'display_header',
				'rule_class' => RewriteRule::RULE_THEME,
				'is_active' => true,
				'description' => 'Display header image',
			) );
			
			$rules[] = $rule;
			
			return $rules;
			
		}

gistfile2.sql

insert into habari__rewrite_rules ( name, parse_regex, build_str, handler, action, priority, is_active, rule_class ) values ( 'display_flickr_thumbnail', '#^flickr/(?P<guid>\\w+)?/?$#i', 'flickr/{$guid}', 'UserThemeHandler', 'display_flickr_thumbnail', 1, 1, 1 );