I tried again without avira avast ...i get the new "table" and when i push calculate i get :
c:\Program Files(86)Toper Calculator Tool\data\windcor.dat tails on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Program Files (x86)\TOPER Calculator Tool\B777\data\wndcor.dat'.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize, Boolean checkHost)
at System.IO.StreamReader..ctor(String path)
at PerformanceCalculatorTemplate1.Form1.btnCalc_Click(Object sender, EventArgs e)
...