diff --git a/engine.xcodeproj/project.pbxproj b/engine.xcodeproj/project.pbxproj
index 14c57f6..f69ed59 100644
--- a/engine.xcodeproj/project.pbxproj
+++ b/engine.xcodeproj/project.pbxproj
@@ -1432,12 +1432,11 @@
 					libs/glm,
 					libs/yoga,
 					libs/tinyxml2,
-					/opt/local/include,
 					libs/jpeg,
 					libs/poly2tri/poly2tri,
 					libs/base64,
 				);
-				LIBRARY_SEARCH_PATHS = /opt/local/lib;
+				LIBRARY_SEARCH_PATHS = "";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -1483,12 +1482,11 @@
 					libs/glm,
 					libs/yoga,
 					libs/tinyxml2,
-					/opt/local/include,
 					libs/jpeg,
 					libs/poly2tri/poly2tri,
 					libs/base64,
 				);
-				LIBRARY_SEARCH_PATHS = /opt/local/lib;
+				LIBRARY_SEARCH_PATHS = "";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
diff --git a/engine/app.cpp b/engine/app.cpp
index 12410fa..1310fc7 100644
--- a/engine/app.cpp
+++ b/engine/app.cpp
@@ -168,8 +168,10 @@ bool App::check_license()
     CURL *curl = curl_easy_init();
     if (curl)
     {
-        //std::string url = "http://omigamedev.com/panopainter/79516B99-8E67-40AD-B12F-149A5A9C2E15";
-        std::string url = "https://panopainter.com/license/E8EDC2FE-E1BD-4AB1-91BD-FCCD926739BD.php";
+        std::string url = "http://omigamedev.com/panopainter/79516B99-8E67-40AD-B12F-149A5A9C2E15";
+        //std::string url = "https://panopainter.com/license/E8EDC2FE-E1BD-4AB1-91BD-FCCD926739BD.php"; // wacom
+        //std::string url = "https://panopainter.com/license/A744FBA9-BC6C-43C8-BD24-0CCE24B3D985.php"; // others
+
         std::string ret;
         curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
         curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);
diff --git a/engine/app_events.cpp b/engine/app_events.cpp
index 3f56d14..144a6cb 100644
--- a/engine/app_events.cpp
+++ b/engine/app_events.cpp
@@ -51,7 +51,8 @@ void App::pick_image(std::function<void(std::string path)> callback)
 #elif __OSX__
     dispatch_async(dispatch_get_main_queue(), ^{
         std::string path = [osx_view pick_file];
-        callback(path);
+        if (!path.empty())
+            callback(path);
     });
 #elif __ANDROID__
     //displayKeyboard(and_app, false);