Hi PQueimadas,
Thanks so much for your fix, however...
Unfortunately I tried that but although YM launches & finds may account name etc, it crashes as soon as I hit 'Sign In'...
(Also tried John Warren2's suggestion to change it back - same result - crashes every time as soon as I press 'Sign In')
Do I need to reboot or anything after changing the (235554) to (235555) in TextEdit & saving?
Many thanks!