Version 1.0.45

core/um-user.php

@@ -319,13 +319,23 @@ class UM_User {
 		}
 		
 		$ultimatemember->files->remove_dir( um_user_uploads_dir() );
-		
-		require_once( ABSPATH . 'wp-admin/includes/user.php' );
-		
+
 		if ( is_multisite() ) {
+			
+			if ( !function_exists('wpmu_delete_user') ) {
+				require_once( ABSPATH . 'wp-admin/includes/ms.php' );
+			}
+			
 			wpmu_delete_user( $this->id );
+			
 		} else {
+			
+			if ( !function_exists('wp_delete_user') ) {
+				require_once( ABSPATH . 'wp-admin/includes/user.php' );
+			}
+			
 			wp_delete_user( $this->id );
+			
 		}
 
 	}

index.php

@@ -3,7 +3,7 @@
 Plugin Name: Ultimate Member
 Plugin URI: http://ultimatemember.com/
 Description: Ultimate Member is a powerful community and membership plugin that allows you to create beautiful community and membership sites with WordPress
-Version: 1.0.44
+Version: 1.0.45
 Author: Ultimate Member
 Author URI: http://ultimatemember.com/
 */

readme.txt

@@ -7,7 +7,7 @@ Tags: access control, author, authors, author profile, comments, community, comm
 Requires at least: 4.1
 Tested up to: 4.1
 
-Stable Tag: 1.0.44
+Stable Tag: 1.0.45
 
 License: GNU Version 2 or Any Later Version
 
@@ -185,6 +185,10 @@ The plugin works with popular caching plugins by automatically excluding Ultimat
 
 == Changelog ==
 
+= 1.0.45: February 8, 2015 =
+
+* Fixed: Multisite bug php Fatal error: call to undefined function wpmu_delete_user()
+
 = 1.0.44: February 8, 2015 =
 
 * Tweak: improved performance: unused user photos are deleted when user upload