tiff file is not transparent

[Colette]

The tiff file comes in with a white back ground when I attach it to the drawing. I have tried changing the property settings to no avail. Any ideas?

[rkmcswain]

The TIFF needs to be bitonal, or 1-bit. IOW- each pixel should be on or off.

More info: http://forums.augi.com/showthread.php?107616-How-to-make-an-inserted-Raster-Image-s-background-transparent