Thanks so much for that solution.
While awaiting your response, the most horrific thing has however just happened. I merged a frame 1400-1600 water fountain c4d file containing emitters (just 900kb in size) into my multiple camera animation file. A ‘not enough memory’ msg came up, and i was subsequently unable to save.
Since i had saved the parent file over the past few weeks of work, i proceeded to exit without saving. To my shock and horror, as i attempted reopening my parent file, it was gone. Is there a way of retrieving a lost file from a back up system in c4d?
Michael