Eraser tool will not work on image

[RhodesianRidgebackDog]

hi,

I am completely new to this. I want to remove some areas of the image with the eraser tool. I don't know whats missing but when I select the eraser tool and hover the mouse pointer over art board, the pointer just changes to a pencil with a can't do icon over it.

This is what I have done up to this point. I "placed" an png image into Illustrator did a 

-> live trace

-> live paint

-> selected the graphic and changed the outline colour

-> changed the fill colour to nothing

I have tried to export the image as a jpg and reimport it again, although the app allows me to erase parts I don't want, the transparency is lost. Does anyone know why this is happening and point me to the right direction.

many thanks

-Rrd

[Monika Gause]

The eraser won't work on JPEGs at all.

After Live painting expand the art and then you should be able to erase.