Flush rewrite rules

core/um-rewrite.php

@@ -32,6 +32,7 @@ class UM_Rewrite {
 		if ( isset( $ultimatemember->permalinks->core['user'] ) ) {
 		
 			$user_page_id = $ultimatemember->permalinks->core['user'];
+			
 			$account_page_id = $ultimatemember->permalinks->core['account'];
 			
 			add_rewrite_rule(
@@ -46,6 +47,8 @@ class UM_Rewrite {
 				'top'
 			);
 			
+			flush_rewrite_rules();
+			
 		}
 		
 	}

index.php

@@ -32,9 +32,7 @@ Author URI: http://ultimatemember.com/
 			exit( wp_redirect( admin_url('admin.php?page=ultimatemember-about')  ) );
 			
 		}
-		
-		flush_rewrite_rules();
-		
+
 	}
 	add_action( 'activated_plugin', 'ultimatemember_activation_hook' );