org.apache.commons.codec.binary.Base64 question

Hi, My web application was initially running on tomcat 7.0.53 and I use org.apache.commons.codec.binary.Base64 for encryption and decryption. Now the server has been updated to tomcat 7.0.57 and I get a java Nullpointer error at c.doFinal line: public static String make(String Data) throws E

Tomcat 6.0.37 - java.lang.NoClassDefFoundError: javax/servlet/ServletContainerInitializer

Hi I have been using Atmosphere for a web application running on tomcat 7. I now have to downgrade to Tomcat 6 due to dependency on other applications. Here is my dependency list. http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" >> http://www.w3.org/2001/XMLSchema-instance"; > > xsi:schemaLocation=