Thanks Keef
I did check through that thread before submitting my post. However, I could find no trace in any of the posts or links of the bizarre error message I am receiving.
Earlier I searched google and found several entries for the error message but some of the cures seemed so difficult and risky that I felt I could easily bugger things up and make matters worse.
The technical types on PPRuNe have come to my rescue many times in the past. Their simple solutions written in plain English are so much more easy to follow than some of the entries penned in technospeak elsewhere..