LyX svn crashes on View>PDF (pdflatex)

[Roger Mc Murtrie]

Intel Mac, Mac OS X 10.4.10

Under latest lyx-1.5.0svn:
Start LyX
Open a Lyx file
Select View>PDF (pdflatex)

Spinning ball cursor appears for a while
LyX crashes.

This also occurs after LyX>Reconfigure.

Roger