Thanking the team for all the help so far. I am encounter a new problem: openf5__224_> Open 11 OLD SEQUENTIAL galk.rsr openf5__224_> Open 11 OLD SEQUENTIAL galk.rsr It gets stuck here. No progress is made from here on. I have to forcibly turn the program off. With regards, Jaimin Shah M.Sc. (Biotechnology) I.I.T. Powai