Rewrote license activation to use a lock to prevent race-conditions.

unity-command/scripts/activate_license.sh

@@ -18,6 +18,7 @@ check_path USERNAME
 check_path PASSWORD
 
 if [[ -z "$SERIAL" || -z "$USERNAME" || -z "$PASSWORD" ]]; then
+    echo "Warning: License activation skipped - missing credentials"
     exit 0
 fi
 
@@ -25,7 +26,16 @@ fi
 if [[ "$SERIAL" == "personal" ]]; then
     echo "Obtaining personal license for Unity..."
     UnityBuilder activate -i /usr/bin/unity-editor -u $USERNAME -p $PASSWORD
+    ACTIVATION_RESULT=$?
 else
     echo "Activating Unity License with serial number."
     unity-editor $DEFAULT_ARGS -serial $SERIAL -username $USERNAME -password $PASSWORD
-fi
+    ACTIVATION_RESULT=$?
+fi
+
+if [[ $ACTIVATION_RESULT -ne 0 ]]; then
+    echo "ERROR: Unity license activation failed with exit code $ACTIVATION_RESULT"
+    exit $ACTIVATION_RESULT
+fi
+
+echo "Unity license activated successfully"