Condition fix

src/engine/wpak/PowersParser.java

@@ -289,11 +289,13 @@ public class PowersParser {
 
             // Parse power conditions
 
-            String[] conditions = conditionString.toString().split("\n");
+            if (conditionString.toString().isEmpty() == false) {
+                String[] conditions = conditionString.toString().split("\n");
 
-            for (String condition : conditions) {
-                String[] parameters = condition.trim().split("\\s+");
-                powerEntry.conditions.put(parameters[0], Float.parseFloat(parameters[1]));
+                for (String condition : conditions) {
+                    String[] parameters = condition.trim().split("\\s+");
+                    powerEntry.conditions.put(parameters[0], Float.parseFloat(parameters[1]));
+                }
             }
 
         } catch (Exception e) {