Index: src/java/org/apache/commons/dbutils/BeanProcessor.java
===================================================================
--- src/java/org/apache/commons/dbutils/BeanProcessor.java	(revision 469544)
+++ src/java/org/apache/commons/dbutils/BeanProcessor.java	(working copy)
@@ -225,6 +225,9 @@
             // Don't call setter if the value object isn't the right type 
             if (this.isCompatibleType(value, params[0])) {
                 setter.invoke(target, new Object[] { value });
+            } else {
+              throw new SQLException(
+                  "Cannot set " + prop.getName() + ": incompatible types.");
             }
 
         } catch (IllegalArgumentException e) {