Downloaded fedora sources (git clone ...)
Configured (it will fail clang++, so used system defaults) ./configure --with-omlibrary=all
Compiled (make)
cd build/bin
./OMEdit

It crashes with memory fault (SIGSEGV)(11) e o trace é:

[CdAB@localhost bin]$ gdb ./OMEdit
GNU gdb (GDB) Fedora 7.9.1-17.fc22
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
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Type "show configuration" for configuration details.
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Reading symbols from ./OMEdit...done.
(gdb) run
Starting program: /home/CdAB/Softwares/OpenModelica/OpenModelica/build/bin/OMEdit
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffe0cac700 (LWP 20643)]

Program received signal SIGSEGV, Segmentation fault.
__memcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:157
157             movq    (%rsi), %rax
(gdb) bt
#0  0x00007ffff00d743d in __memcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:157
#1  0x00007fffd8f448b2 in KComponentDataPrivate::lazyInit(KComponentData const&) (__len=14, __src=<optimized out>, __dest=<optimized out>)
    at /usr/include/bits/string3.h:53
#2  0x00007fffd8f448b2 in KComponentDataPrivate::lazyInit(KComponentData const&) (out=<synthetic pointer>, a=...) at /usr/include/QtCore/qstringbuilder.h:277
#3  0x00007fffd8f448b2 in KComponentDataPrivate::lazyInit(KComponentData const&) (out=<synthetic pointer>, p=...) at /usr/include/QtCore/qstringbuilder.h:403
#4  0x00007fffd8f448b2 in KComponentDataPrivate::lazyInit(KComponentData const&) (this=<optimized out>) at /usr/include/QtCore/qstringbuilder.h:126
#5  0x00007fffd8f448b2 in KComponentDataPrivate::lazyInit(KComponentData const&) (this=<optimized out>) at /usr/include/QtCore/qstringbuilder.h:139
#6  0x00007fffd8f448b2 in KComponentDataPrivate::lazyInit(KComponentData const&) (this=0xc44ec0, component=...) at ../../kdecore/kernel/kcomponentdata.cpp:138
#7  0x00007fffd8f44b9e in KComponentData::KComponentData(QByteArray const&, QByteArray const&, KComponentData::MainComponentRegistration) (this=0xc34ca8, name=..., catalog=..., registerAsMain=KComponentData::SkipMainComponentRegistration) at ../../kdecore/kernel/kcomponentdata.cpp:82
#8  0x00007fffd99b75db in Breeze::Helper::Helper(QByteArray const&) (this=0xc34ca0, name=...) at ../../kstyle/breezehelper.cpp:46
#9  0x00007fffd99c83ae in Breeze::Style::Style() (this=0xc33920) at ../../kstyle/breezestyle.cpp:159
#10 0x00007fffd99d4d81 in Breeze::StylePlugin::create(QString const&) (this=<optimized out>, key=...) at ../../kstyle/breezestyleplugin.cpp:38
#11 0x00007ffff1bc4473 in QStyleFactory::create(QString const&) (key=...) at styles/qstylefactory.cpp:193
#12 0x00007ffff18bd09e in QApplication::style() () at kernel/qapplication.cpp:1465
#13 0x00007ffff192dfea in qt_set_x11_resources(char const*, char const*, char const*, char const*) (font=0x0, fg=0x0, bg=0x0, button=0x0)
    at kernel/qapplication_x11.cpp:1314
#14 0x00007ffff193169c in qt_init(QApplicationPrivate*, int, _XDisplay*, unsigned long, unsigned long) (priv=priv@entry=
    0xabca70, display=display@entry=0x0, visual=visual@entry=0, colormap=colormap@entry=0) at kernel/qapplication_x11.cpp:2433
#15 0x00007ffff18bd592 in QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) (this=0xabca70, dpy=dpy@entry=0x0, visual=visual@entry=0, cmap=cmap@entry=0) at kernel/qapplication.cpp:842
#16 0x00007ffff18bd83f in QApplication::QApplication(int&, char**, int) (this=0x7fffffffd4a0, argc=@0x7fffffffd22c: 1, argv=0x7fffffffdb08, _internal=17041414)
    at kernel/qapplication.cpp:741
#17 0x00000000004958e5 in main(int, char**) (argc=1, argv=0x7fffffffdb08) at main.cpp:236
(gdb)