diff --git editors/ckeditor.inc editors/ckeditor.inc
index c52ebbf..409a0cf 100644
--- editors/ckeditor.inc
+++ editors/ckeditor.inc
@@ -161,13 +161,14 @@ function wysiwyg_ckeditor_settings($editor, $config, $theme) {
   }
 
   if (isset($config['css_setting'])) {
+    global $theme_key;
     // Versions below 3.0.1 could only handle one stylesheet.
     if (version_compare($editor['installed version'], '3.0.1.4391', '<')) {
       if ($config['css_setting'] == 'theme') {
         $settings['contentsCss'] = reset(wysiwyg_get_css());
       }
       elseif ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-        $settings['contentsCss'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+        $settings['contentsCss'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
       }
     }
     else {
@@ -175,7 +176,7 @@ function wysiwyg_ckeditor_settings($editor, $config, $theme) {
         $settings['contentsCss'] = wysiwyg_get_css();
       }
       elseif ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-        $settings['contentsCss'] = explode(',', strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme())));
+        $settings['contentsCss'] = explode(',', strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key))));
       }
     }
   }
diff --git editors/fckeditor.inc editors/fckeditor.inc
index ba1d7f2..1c4f5e6 100644
--- editors/fckeditor.inc
+++ editors/fckeditor.inc
@@ -133,7 +133,8 @@ function wysiwyg_fckeditor_settings($editor, $config, $theme) {
       $settings['EditorAreaCSS'] = implode(',', wysiwyg_get_css());
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['EditorAreaCSS'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      global $theme_key;
+      $settings['EditorAreaCSS'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
     }
   }
 
diff --git editors/nicedit.inc editors/nicedit.inc
index 90dd973..d8250d2 100644
--- editors/nicedit.inc
+++ editors/nicedit.inc
@@ -77,14 +77,15 @@ function wysiwyg_nicedit_settings($editor, $config, $theme) {
 
   // Add editor content stylesheet.
   if (isset($config['css_setting'])) {
+    global $theme_key;
     if ($config['css_setting'] == 'theme') {
-      $css = path_to_theme() . '/style.css';
+      $css = drupal_get_path('theme', $theme_key) . '/style.css';
       if (file_exists($css)) {
         $settings['externalCSS'] = base_path() . $css;
       }
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['externalCSS'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      $settings['externalCSS'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
     }
   }
 
diff --git editors/openwysiwyg.inc editors/openwysiwyg.inc
index 889afac..bab12cc 100644
--- editors/openwysiwyg.inc
+++ editors/openwysiwyg.inc
@@ -104,7 +104,8 @@ function wysiwyg_openwysiwyg_settings($editor, $config, $theme) {
       $settings['CSSFile'] = reset(wysiwyg_get_css());
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['CSSFile'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      global $theme_key;
+      $settings['CSSFile'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
     }
   }
 
diff --git editors/tinymce.inc editors/tinymce.inc
index 2c74f11..d11d763 100644
--- editors/tinymce.inc
+++ editors/tinymce.inc
@@ -192,7 +192,8 @@ function wysiwyg_tinymce_settings($editor, $config, $theme) {
       $settings['content_css'] = implode(',', wysiwyg_get_css());
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['content_css'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      global $theme_key;
+      $settings['content_css'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
     }
   }
 
diff --git editors/whizzywig.inc editors/whizzywig.inc
index bc8c4ad..20dfe31 100644
--- editors/whizzywig.inc
+++ editors/whizzywig.inc
@@ -104,14 +104,15 @@ function wysiwyg_whizzywig_settings($editor, $config, $theme) {
 
   // Add editor content stylesheet.
   if (isset($config['css_setting'])) {
+    global $theme_key;
     if ($config['css_setting'] == 'theme') {
-      $css = path_to_theme() . '/style.css';
+      $css = drupal_get_path('theme', $theme_key) . '/style.css';
       if (file_exists($css)) {
         $settings['externalCSS'] = base_path() . $css;
       }
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['externalCSS'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      $settings['externalCSS'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
     }
   }
 
diff --git editors/wymeditor.inc editors/wymeditor.inc
index d0bf759..82a9adf 100644
--- editors/wymeditor.inc
+++ editors/wymeditor.inc
@@ -176,7 +176,8 @@ function wysiwyg_wymeditor_settings($editor, $config, $theme) {
       $settings['stylesheet'] = reset(wysiwyg_get_css());
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['stylesheet'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      global $theme_key;
+      $settings['stylesheet'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
     }
   }
 
diff --git editors/yui.inc editors/yui.inc
index a18be2e..c6c791a 100644
--- editors/yui.inc
+++ editors/yui.inc
@@ -204,7 +204,8 @@ function wysiwyg_yui_settings($editor, $config, $theme) {
       $settings['extracss'] = wysiwyg_get_css();
     }
     else if ($config['css_setting'] == 'self' && isset($config['css_path'])) {
-      $settings['extracss'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));
+      global $theme_key;
+      $settings['extracss'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => drupal_get_path('theme', $theme_key)));
       $settings['extracss'] = explode(',', $settings['extracss']);
     }
     // YUI only supports inline CSS, so we need to use @import directives.