Install on Linux Mint no access to file system

I installed on Linux Mint and set the workspace up under my home folder. I also have an apps folder under the home folder wher I have the executable. I have csv files in the workspace folder. Knime launhes fine but when I add a file reader or a CSV reader config is not available to allow me to set the path to the file, Right click and config do nothing F6 does nothing. What am I missing?