fix forgix running on only a single modloader

build.gradle

@@ -4,10 +4,10 @@ plugins {
 }
 
 forgix {
-    autoRun = true
     
     // add the mod loaders to the end of the jar
     // put together in the format: "a", "a-b", "a-b-c"
+    int loaderCount = 0;
     String modLoaders = "";
     ((String) gradle.builds_for)
         .split(",")
@@ -20,7 +20,13 @@ forgix {
             }
             
             modLoaders += loaderName;
+
+            loaderCount++;
         }
+
+    // run if there are multiple launchers that need merging
+    autoRun = (loaderCount > 1);
+    
     // merged jars are named in the format: 
     // "DistantHorizons-3.0.1-b-dev-26.1-fabric-neoforge.jar"
     archiveClassifier = modLoaders