Try start on main thread

src/main/java/net/kdt/pojavlaunch/PLaunchApp.java

@@ -22,10 +22,31 @@ public class PLaunchApp extends UIApplicationDelegateAdapter {
             Thread launchThread = new Thread() {
                 @Override
                 public void run() {
-                    Application.launch(PLaunchJFXApp.class);
+                    // Application.launch(PLaunchJFXApp.class);
+                    
+        // Start Minecraft there!
+        File file = new File(Tools.DIR_GAME_NEW);
+        file.mkdirs();
+        
+        String mcver = "1.13";
+        try {
+            mcver = Tools.read(Tools.DIR_GAME_HOME + "/config_ver.txt");
+        } catch (IOException e) {
+            System.out.println("config_ver.txt not found, defaulting to Minecraft 1.13");
+        }
+        
+        MinecraftAccount acc = new MinecraftAccount();
+        acc.selectedVersion = mcver;
+        JMinecraftVersionList.Version version = Tools.getVersionInfo(mcver);
+        
+        try {
+            Tools.launchMinecraft(acc, version);
+        } catch (Throwable th) {
+            Tools.showError(th);
+        }
                 }
             };
-            launchThread.setDaemon(true);
+            // launchThread.setDaemon(true);
             launchThread.start();
         } else {
             WindowAlertController alertController = new WindowAlertController("Error", "OpenJDK is not installed. Please install before enter launcher.", UIAlertControllerStyle.Alert);

src/main/java/net/kdt/pojavlaunch/PLaunchJFXApp.java

@@ -23,15 +23,6 @@ public class PLaunchJFXApp extends Application {
         
         JREUtils.saveGLContext();
     
-/*
-        Circle circ = new Circle(40, 40, 30);
-        Group root = new Group(circ);
-        Scene scene = new Scene(root, 400, 300);
-        stage.setTitle("PojavLauncher");
-        stage.setScene(scene);
-        stage.show();
-*/
-
         // Start Minecraft there!
         File file = new File(Tools.DIR_GAME_NEW);
         file.mkdirs();

src/main/jni/jre_launcher.c

@@ -38,13 +38,13 @@
 typedef jint JNI_CreateJavaVM_func(JavaVM **pvm, void **penv, void *args);
 
 JNIEXPORT jint JNICALL Java_com_oracle_dalvik_VMLauncher_createLaunchMainJVM(JNIEnv *env, jclass clazz, jobjectArray vmArgArr, jstring mainClassStr, jobjectArray mainArgArr) {
-    void *libjvm = dlopen("/usr/lib/jvm/java-16-openjdk/lib/server/libjvm.dylib", RTLD_NOW + RTLD_GLOBAL);
-    if (libjvm == NULL) {
-        printf("dlopen failed to open libjvm.dylib (dlerror %s).", dlerror());
+    void *libjli = dlopen("/usr/lib/jvm/java-16-openjdk/lib/libjli.dylib", RTLD_NOW + RTLD_GLOBAL);
+    if (libjli == NULL) {
+        printf("dlopen failed to open libjli.dylib (dlerror %s).", dlerror());
         return -1;
     }
     
-    JNI_CreateJavaVM_func *jl_JNI_CreateJavaVM = (JNI_CreateJavaVM_func *) dlsym(libjvm, "JNI_CreateJavaVM");
+    JNI_CreateJavaVM_func *jl_JNI_CreateJavaVM = (JNI_CreateJavaVM_func *) dlsym(libjli, "JNI_CreateJavaVM");
         if (jl_JNI_CreateJavaVM == NULL) {
         printf("dlsym failed to get JNI_CreateJavaVM (dlerror %s).\n", dlerror());
         return -2;