When I add a pdf figure into lyx the preview works only for the current session.
When I restart Lyx I get an error:
Error loading file into memory. This only
seems to occur with .pdf files (i.e. not with .svg or .png) and has no effect on
the final rendered PDF document.
I've seen references to this bug in several places online but in those case the issue was that previews were never generated. Also, I have pdf2ps and pdftoeps installed so this shouldn't be the problem either.
Running Kubuntu 12.04; Lyx 2.04