diff --git a/src/main/java/w2phtml/api/ConverterFactory.java b/src/main/java/w2phtml/api/ConverterFactory.java
index 34ca0f8..e65c3a8 100644
--- a/src/main/java/w2phtml/api/ConverterFactory.java
+++ b/src/main/java/w2phtml/api/ConverterFactory.java
@@ -47,8 +47,10 @@ public class ConverterFactory {
   		InputStream stream = loader.getResourceAsStream(propPath);
   		String version = "Failed to get version";
   		try {
-  			prop.load(stream);
-  			version = (String) prop.get("releaseVersion");
+        if (stream != null) {
+  	  		prop.load(stream);
+  			  version = (String) prop.get("releaseVersion");  
+  			}
   		} catch (IOException e) {
   			// TODO Auto-generated catch block
   			e.printStackTrace();
@@ -65,8 +67,10 @@ public class ConverterFactory {
   		InputStream stream = loader.getResourceAsStream(propPath);
   		String date = "Failed to get date";
   		try {
-  			prop.load(stream);
-  			date = (String) prop.get("releaseDate");
+  		  if (stream != null) {
+  		    prop.load(stream);
+          date = (String) prop.get("releaseDate");  
+  		  }
   		} catch (IOException e) {
   			// TODO Auto-generated catch block
   			e.printStackTrace();