I've replaced the MyCertificate.java with the one emailed to me into GetStarted/src/main/java/com/myscript/certificate. I then did a full re-build of the Demo project and deployed on my VM. It still has the error message that I need to replace the .java file.
I spent about 20 minutes on this, re-downloading/re-imaging the VM and sending new certificate.java files...nothing is doing the trick.
Please also replace the default certificate in the 'Demo' folder:
You should then be able to run the IINK 'Demo' example.