You can go to Settings->Solutions then open the Dynamics XRM Tools solution. Look on the left nab pane for SDK message processing steps and check the items' status.
In the solution list you would also see the JS Converter module if it downloaded correctly.
If it seems to still fail then uninstall/reinstall the DXTools solution.
As a fallback you can download the original beta DXTools as a whole package instead of using the new install modules feature.
Thanks for the prompt response. I did check the box on initial install. Where else should I be checking it now?
sorry for the idiocy of the question or is it a case of deleting the solution and re-importing?