Please check whether you have any invalid files in the <ReadyAPI_Install>\bin\ext directory. Try removing extra file from this folder and starting ReadyAPI again. By default, this folder includes only the following files:
postgresql-9.3-1102.jdbc41.jar, sqljdbc42.jar and readme.txt.
Also, you can try deleting the workspace file (you won't loose your projects, you just will need to add them to the workspace again). The default soapui-workspace.xml file is in <user profile directory> i.e. C:\Users\yourusername on Windows.
Thank you for the feedback and apologises for my delayed response.
Unfortuanltey suggested solution below did not work my folder <ReadyAPI_Install>\bin\ext directory only contains the files reffered to below and I also tried removing projects from my workspace but still no lunk I will proceed with logging a new case