Did you try to start PVD in debug mode?
Just call PVD with the parameter -debug or use the predefined debug.bat in the PVD program Folder. In the help menu, you will find an entry called "log". Use this to show the log. You will see notifications about all the plugins. Check if any errors have occured. If everything is ok, clear the log and start the csv-import. Read the log again to see if it contains any hints why the import did not work.
Oliver