Notification error?

Here is my code:"Hello");

Here is the error:

How would I fix this? I am using vaadin-server and version 7.0.5

Hi, did you resolve this problem? I have the same problem wtih notification.

If you also have “Caused by: java.lang.VerifyError:” in your stack trace, the problem is caused by having compiled the code with a version of some library that is binary incompatible with the version you use in your deployment, or having two different versions of the same library on your classpath.

If you don’t have this line, then the problem is something else and additional information is needed.

There’s no AbstractApplicationServlet in Vaadin 7, only in Vaadin 6, so your servlet configuration seems to be broken somehow.