After messing around removing plugins manually and not doing it fully, I found numerous tips for using XOrganiser. The app made disabling plugins soooo easy and although not using its other functions for scenery and preferences, it looks a worthy purchase for $10. Anyway, after disabling all the plugins noted by Sebastian then basically all of them bar WT3, I was still getting issues so decided to reinstall IXEG and that sorted it. Since doing the reinstall I've carried out 2 check flights with all the plugins and my normal external apps running and all was fine....
Thanks for your input Sebastian
Ian