Comment 5 for bug 461996

I've also had the same problem after upgrading to Karmic. A hack that I used to get a single file I needed by tomorrow worked as follows:
1. Start Lyx in a terminal with the LaTeX debug flag: "lyx -dbg 128 Lab6.lyx"
2. Open the problematic document.
3. Attempt to compile (is that the correct word?) it with pdflatex.
4. Note the file reported missing.
5. Copy the needed PDF to a directory like /tmp/lyx_tmpdir.*/lyx_tmpbuf0/, which should contain all of the other files.
6. Rerun the compilation using pdflatex.

I'm not sure if this will work all of the time, but it may tide some people over until then.

Attached is a log file of a run of Lyx with a simple file containing nothing but a simple instance of a W-4 form PDF embedded in a Lyx document with no options.