The Daily Record and other sources report Robert Milne collapsed on Everest 1,300 feet from completing the 7 summits.
Milne, 49, a reknown Scotish artificial intelligence engineer, was testing IM-PAC, designed to provide more effective computer support to mountaineering expeditions. He had done both Kosciuszko and Carstenz Pyramid. He was managing director of Sermatech Intelligent Applications in Livingston, Scotland.
He had blog on his attempt which also has links to his project.