I had problems in getting GUID on Mac, Windows and Linux…
I found a solution:

Function Method_Generate_GUID() As String
  Dim db As New SQLiteDatabase
  Dim Sql_instruction As String= "select hex( randomblob(4)) " _
  + "|| '-' || hex( randomblob(2)) " _
  + "|| '-' || '4' || substr( hex( randomblob(2)), 2) " _
  + "|| '-' || substr('AB89', 1 + (abs(random()) % 4) , 1) " _
  + "|| substr(hex(randomblob(2)), 2) " _
  + "|| '-' || hex(randomblob(6)) AS GUID"
  If db.Connect Then
    Dim GUID As String = db.SQLSelect(Sql_instruction).Field("GUID")
    Return  GUID
    db.Close
  End If
End Function

Perhaps it might be helpful to someone else :)

Rob

http://forums.realsoftware.com/viewtopic.php?f=1&t=44203&start=13

An online GUID (UID) generator. https://www.guidgenerator.com/

Info: http://en.wikipedia.org/wiki/Globally_unique_identifier

Seems also to be a version 5 Info: http://en.wikipedia.org/wiki/Universally_unique_identifier