Logged In: NO

When I try to texify my document I get this error-Message:

[6]) (tpx-test.tex (aerger1.TpX

! LaTeX Error: Cannot determine size of graphic in
aerger1.pdf (no BoundingBox)
.

See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...

l.18 \put(0,0){\includegraphics{aerger1}}

Markusv