The producer of such hits as Phantom of the Opera, Cats and Les Miserables is said to have caused upset to a Catholic parish priest and some mourners by his words during the tribute to former employee Frank Conway, 88, who was himself well known for his colourful language.
An angry woman was said to have stood up and shouted at Sir Cameron, who owns a nearby 60,000 acre estate on the shores of Loch Morar in West Inverness-shire. He made the comments while reading out a letter written to Mr Conway.
The funeral service was held a week past Friday by Maltese-born priest Father Joseph Calleja at his picturesque St Cumin RC Church only feet from the waters of Loch Morar. He said: "I was upset by it and still am upset. My position has to be one of forgiveness even if I do not agree with what was said.
"If you cannot say something good about somebody at his funeral you should say nothing."
Bishop Joseph Toal of the Argyll and the Isles diocese, said yesterday: "Father Calleja reported to me his upset and the upset of others at remarks made at the funeral service.
"About two years ago I gave an instruction to my priests that because tributes at funerals could be boring or upsetting they should be very short and read out before the mass.
"If any stories had to be told they should be said at the reception after the funeral."
Sir Cameron said: "What I read at the service was simply from Frank's own book with his memoirs and I was using his own words and from his own material. In fact I toned down a lot of the language that Frank had used. The congregation were there to celebrate Frank's life and I was very pleased his family and many others were grateful that I properly reflected Frank's personality and the life of a very special and much loved person."