diff --git a/org.springframework.beans/src/main/java/org/springframework/beans/SimpleTypeConverter.java b/org.springframework.beans/src/main/java/org/springframework/beans/SimpleTypeConverter.java
index a24d119a453..a75e5fd3625 100644
--- a/org.springframework.beans/src/main/java/org/springframework/beans/SimpleTypeConverter.java
+++ b/org.springframework.beans/src/main/java/org/springframework/beans/SimpleTypeConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2009 the original author or authors.
+ * Copyright 2002-2010 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,8 @@
 package org.springframework.beans;
 
 import org.springframework.core.MethodParameter;
+import org.springframework.core.convert.ConversionException;
+import org.springframework.core.convert.ConverterNotFoundException;
 
 /**
  * Simple implementation of the TypeConverter interface that does not operate
@@ -46,12 +48,18 @@ public class SimpleTypeConverter extends PropertyEditorRegistrySupport implement
 		try {
 			return this.typeConverterDelegate.convertIfNecessary(value, requiredType, methodParam);
 		}
-		catch (IllegalArgumentException ex) {
+		catch (ConverterNotFoundException ex) {
+			throw new ConversionNotSupportedException(value, requiredType, ex);
+		}
+		catch (ConversionException ex) {
 			throw new TypeMismatchException(value, requiredType, ex);
 		}
 		catch (IllegalStateException ex) {
 			throw new ConversionNotSupportedException(value, requiredType, ex);
 		}
+		catch (IllegalArgumentException ex) {
+			throw new TypeMismatchException(value, requiredType, ex);
+		}
 	}
 
 }
diff --git a/org.springframework.context/src/main/java/org/springframework/validation/AbstractPropertyBindingResult.java b/org.springframework.context/src/main/java/org/springframework/validation/AbstractPropertyBindingResult.java
index 9478fa8626f..b75e9bb9898 100644
--- a/org.springframework.context/src/main/java/org/springframework/validation/AbstractPropertyBindingResult.java
+++ b/org.springframework.context/src/main/java/org/springframework/validation/AbstractPropertyBindingResult.java
@@ -57,7 +57,9 @@ public abstract class AbstractPropertyBindingResult extends AbstractBindingResul
 	public void initConversion(ConversionService conversionService) {
 		Assert.notNull(conversionService, "ConversionService must not be null");
 		this.conversionService = conversionService;
-		getPropertyAccessor().setConversionService(conversionService);
+		if (getTarget() != null) {
+			getPropertyAccessor().setConversionService(conversionService);
+		}
 	}
 
 	/**