Problems Installing Calc 2.0-a3

Hi, after having tried to update to Calc 2.0, I receive the following error on install start-up: "There has been an error. No origin file found that matched C:/opt/OpenForisCalc/calc-server/tomcat/webapps/saiku/WEB-INF/classes/saiku-repository" If have only the required versions of supporting software installed (according to install webpage). The older calc version was removed before. OF collect runs smoothly. I have worked through various threads to see, if the reasons could be on of the issues stated elsewhere (i.e. R foldername w/ spaces, etc.), to no avail. Prior to uninstall of the older Calc version everything was working fine. My questions are: 1) How to solve this? 2) Does Calc 2.0 work with newer versions of the supporting software? Thanks for your quick help!!