Error 'No bounding' box for PDF image

You are most likely calling graphicx with a specific driver option not compatible with the compiler/graphics format. For example

\usepackage[dvipdfm]{graphicx}% http://ctan.org/pkg/graphicx

Remove this option and let graphicx do its own thing of figuring out the required graphics driver.

Alternatively, if all else fails, you could also try supplying the correct bounding box as option:

\includegraphics[bb=llx lly urx ury]{image}

where llx lly urx ury denotes the lower-left (x,y) and upper-right (x,y) coordinate of the image in bps (big points).