It might be the same problem as this one: ===================

...

! Font \T1/cmr/m/n/10=ecrm1000 at 10pt not loadable: metric data not found or bad. ===================

It looks as it is the same problem. I have run tftopl + pltotf on the fonts, but it does not work. I get the problem even with cmr: =================== C:\Archivos de programa\TeXLive\texmf\tex\eplainJA>luatex -ini minimum_font.tex This is LuaTeX, Version snapshot-0.25.4-2008071819 (Web2C 7.5.7) (INITEX) (minimum_font.tex ! Font \tenrm=cmr10 not loadable: metric data not found or bad. ===================

There is a luatex fix in svn

I have not yet tried. I'll first have to learn to work with svn. Hope next week I'll have some time. Chao Javier A.