No image on screen but prints well

[Frontman]

Hello,

A friend of mine is having a problem with graphics in Acrobat 6.

When he creates a PDF from FrameMaker 7.0 with Acrobat 6 the graphics do not view properly "half tones or no graphic".

If they produce the same documents on another computer with FrameMaker 7.0 and Acrobat 5 everything works out properly.

Is this a glitch with Acrobat 6 or possibly the distiller that comes in the package?

Thanks