This a a message from the Tk windowing toolkit that Chimera uses.  It could not find a font it needed nor could it find its “failsafe” fallback font.  Are you on Linux?  You need to install some English-language fonts, in particular the “sans” font.  See How do I install fonts? - Ask Ubuntu.

—Eric

Eric Pettersen
UCSF Computer Graphics Lab


On Mar 7, 2019, at 8:40 AM, 管泓翔 <hhguan1101@gmail.com> wrote:

When I started chimera, it showed "Cannot find a usable font
Aborted (core dumped)". How to fix the problem?


                                           Thank you HH


                                               
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