[Ifeffit] Prolems with JFEFF on Windows 7.

Dear Sir or Madam. I am new user or JFEFF 9.6.4, which I use doing my dissertation in Institute of Nuclear Physics PAN in Cracow. I use Windows 7 Professional N and I have problems with JFEFF. Therefore I can open files in It, but when I try to Save&Run there are some errors. I attached a screenshot with errors showed in command window in attachment. I tried to solve this by instaling different versions of JAVA, runnig as an admin and also check whether It is not my antivirus, but none of them helped. Thanks in advance. Best regards, Szymon Kucharczyk.