I think I have found a bug with lists+minipages.
Use this sample lyx file under lyx-1.1.6fix4.
Go to the first item, open the paragraph pop up and check minipage, set the width to 50%.
When you do a view ps, it works fine.
Do a undo.
Try to view ps and latex gives a lot of error.
To correct the file, you must go to the second item of the list, open the paragraph popup and uncheck
minipage.
Your sincerely,
Yann COLLETTE
#LyX 1.1 created this file. For more info see http://www.lyx.org/ \lyxformat 218 \textclass article \language french \inputencoding auto \fontscheme default \graphics default \paperfontsize default \spacing single \papersize Default \paperpackage a4 \use_geometry 0 \use_amsmath 0 \paperorientation portrait \secnumdepth 3 \tocdepth 3 \paragraph_separation indent \defskip medskip \quotes_language english \quotes_times 2 \papercolumns 1 \papersides 1 \paperpagestyle default
\layout List \labelwidthstring 00.00.0000 List\SpecialChar ~ one list \begin_deeper \layout List \labelwidthstring 00.00.0000 list \layout List \labelwidthstring 00.00.0000 list \end_deeper \layout List \labelwidthstring 00.00.0000 List\SpecialChar ~ two list \begin_deeper \layout List \labelwidthstring 00.00.0000 list \layout List \labelwidthstring 00.00.0000 list \end_deeper \layout List \labelwidthstring 00.00.0000 List\SpecialChar ~ three list \begin_deeper \layout List \labelwidthstring 00.00.0000 list \layout List \labelwidthstring 00.00.0000 list \the_end