pro tools portlet

I am trying to get a demo portlet working for integration of Pro Tools spreadsheet and chart add on with Xcel spreadsheets loaded from Liferay 6.2 Document Library as developed by Henrik Erola from Vaadin stored here in github:

https://github.com/henrikerola/pro-tools-portlet

I am able to build and deploy the portlet, but get an error with both Liferay 6.2 GA2 and GA6:

Request was not handled by any registered handler

This is a great integration, but I am not sure what the issue is.  It would be great to get some explanation.