sourcetype failed lookups

src/engine/powers/ActionsBase.java

@@ -244,8 +244,12 @@ public class ActionsBase {
             if (bonus == null)
                 return false;
 
-            SourceType sourceType = SourceType.GetSourceType(this.stackType);
+            SourceType sourceType = null;
+            try {
+                sourceType = SourceType.GetSourceType(this.stackType);
+            }catch(Exception ignored){
 
+            }
             if(sourceType != null && (bonus.getBool(ModType.ImmuneTo,sourceType) || bonus.getBool(ModType.NoMod,sourceType)))
                 return true;