title: Can't open project properties google apps script
body: <p>I've deleted in file->project properties -> project Properties the properties key and value and from then I can't open project properties and script not working. 
  How reset/delete the script properties? </p>
  
  <p>I've tried copy the project, but I'm using the version of project and only the latest version is copied to the new project. I'need the oldest version of my project. </p>
  
  <p>Please help me!</p>
  
  <p>this is the link of spreadsheet
  <a href="https://docs.google.com/a/kierowca.pl/spreadsheet/ccc?key=0AnTGczwoMaewdEp3WUdmWU5UdFpmYk1JOVkyR1g0dmc" rel="nofollow">https://docs.google.com/a/kierowca.pl/spreadsheet/ccc?key=0AnTGczwoMaewdEp3WUdmWU5UdFpmYk1JOVkyR1g0dmc</a></p>
  
  <p>name of project
  zleceniaZewnSystemZlecen1</p>