lib/calabash-cucumber/launch/simulator_helper.rb in calabash-cucumber-0.9.50 vs lib/calabash-cucumber/launch/simulator_helper.rb in calabash-cucumber-0.9.51

@@ -96,10 +96,10 @@
         File.expand_path(ENV['PROJECT_DIR'] || Dir.pwd)
       end
 
       def self.app_bundle_or_raise(path)
         bundle_path = nil
-        path = File.expand_path(path)
+        path = File.expand_path(path) if path
 
         if path and not File.directory?(path)
           puts "Unable to find .app bundle at #{path}. It should be an .app directory."
           dd_dir = derived_data_dir_for_project
           app_bundles = Dir.glob(File.join(dd_dir, "Build", "Products", "*", "*.app"))