Finished updating to 1.9.4. Hopefully it'll work for 1.10 also

src/main/java/net/doubledoordev/d3core/client/ModConfigGuiFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014,
+ * Copyright (c) 2014-2016, Dries007 & DoubleDoorDevelopment
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -12,7 +12,7 @@
  *   this list of conditions and the following disclaimer in the documentation
  *   and/or other materials provided with the distribution.
  *
- *  Neither the name of the {organization} nor the names of its
+ *  Neither the name of DoubleDoorDevelopment nor the names of its
  *   contributors may be used to endorse or promote products derived from
  *   this software without specific prior written permission.
  *
@@ -27,18 +27,17 @@
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *
  */
 
 package net.doubledoordev.d3core.client;
 
+import net.doubledoordev.d3core.D3Core;
+import net.minecraftforge.common.config.ConfigElement;
+import net.minecraftforge.common.config.Configuration;
 import net.minecraftforge.fml.client.IModGuiFactory;
 import net.minecraftforge.fml.client.config.GuiConfig;
 import net.minecraftforge.fml.client.config.IConfigElement;
-import net.minecraftforge.fml.common.Loader;
-import net.minecraftforge.fml.common.ModContainer;
 import net.doubledoordev.d3core.util.CoreConstants;
-import net.doubledoordev.d3core.util.ID3Mod;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.resources.I18n;
@@ -52,6 +51,7 @@
  */
 public class ModConfigGuiFactory implements IModGuiFactory
 {
+    @SuppressWarnings("WeakerAccess")
     public static class D3ConfigGuiScreen extends GuiConfig
     {
         public D3ConfigGuiScreen(GuiScreen parentScreen)
@@ -61,14 +61,22 @@ public D3ConfigGuiScreen(GuiScreen parentScreen)
 
         private static List<IConfigElement> getConfigElements()
         {
-            List<IConfigElement> list = new ArrayList<>();
-            for (ModContainer modContainer : Loader.instance().getActiveModList())
+            Configuration c = D3Core.getConfig();
+            if (c.getCategoryNames().size() == 1)
             {
-                if (modContainer.getMod() instanceof ID3Mod)
+                //noinspection LoopStatementThatDoesntLoop
+                for (String k : c.getCategoryNames())
                 {
-                    ((ID3Mod) modContainer.getMod()).addConfigElements(list);
+                    // Let forge do the work, for loop abused to avoid other strange constructs
+                    return new ConfigElement(c.getCategory(k)).getChildElements();
                 }
             }
+
+            List<IConfigElement> list = new ArrayList<>();
+            for (String k : c.getCategoryNames())
+            {
+                list.add(new ConfigElement(c.getCategory(k)));
+            }
             return list;
         }
     }