LuaLaTeX crashes for \'ü $x$ and accents over ü are set too high.

[Tchiller]

The following MWE does crash if compiled with LuaLaTeX. XeLaTeX works just fine. If written as \'{ü} it will work as well. But in both cases, the accent looks rather ill positioned (too high). This does happen for several accents like the ones used here: http://tex.stackexchange.com/a/202005

\usepackage{fontspec}
\setmainfont{Linux Libertine O}

\begin{document}
\'ü $x$
\end{document}

[phi-gamma]

···<date: 2014-09-19, Friday>···<from: Tchiller>···

The following MWE does crash if compiled with LuaLaTeX. XeLaTeX
works just fine. If written as \'{ü} it will work as well.>

\usepackage{fontspec}
\setmainfont{Linux Libertine O}

\begin{document}
\'ü $x$
\end{document}

Thanks for the report. This looks like it’s caused by mixing
Type1 and OT fonts which confuses the node processor. I’ll
file a bug with Hans as soon as I figure out a way to reproduce
it without Latex. In the meantime just use the unicode-math
package to set up a clean OT environment.

                                                          But

in both cases, the accent looks rather ill positioned (too high).
This does happen for several accents like the ones used here:
http://tex.stackexchange.com/a/202005

Might be related to this issue:
#221

Best,
Philipp

[phi-gamma]

Next release will come with a fix for the crash. Though loading unicode-math
seems like the saner approach.

As to the diacritics -- that’s another issue. Could you open another ticket
and please add some more information as to why you consider their
placement too high?

[Tchiller]

Thank you very much for the fix. Regarding the second issue: I just tried my old MWE and I am not able to reproduce that anymore. Seems like there has something changed. When I wrote this issue, the diacritics were set much higher with Lua- than with XeLaTeX and looked quite odd.
But as it stands, we can close this issue. Works perfectly now.
Thanks again.