NetBeans Platform CreateReadUpdateDelete Tutorial

Hi,

I hope you can help, though a number of people have posted messages about similar problems. No one has posted a solution.

I am doing the Create Read Update Delete tutorial(https://platform.netbeans.org/tutorials/nbm-crud.html). One point I am having to spell out the usually used acronym as my first attempt at posting this message was denied. Beacause I used a word on the block list. I was given no indication which word it was I used, but the acronym in question seems the only possibility. Anyway if you are reading this I was right.

The problem occurs when I get to the 'Running the Prototype' section. The application runs but the JtextArea is not displayed. 

I have followed the tutorial exactly, being very careful to follow the actions as prescibed. In fact I have now done this three times (from scratch each time) and the result is always the same. 

I tried debugging the CustomerVieweTopComponent, by placing a breakpoint at the first line of the Constructor. That is when I started to get Exceptions. They were NoClassDefExceptions, as far as I remember, I did not take notes. A number of bugs have been raised as a result.

Finally a little about me and my environment. 

*Netbeans 8.1
*jdk1.8.0_65
*Windows 10


I hope there is a simple solution to this I would like to sort it out and get on with my project.

       Sincerely R A Evans