Version:           3.2.3 (using KDE 4.2.3)
OS:                Linux
Installed from:    Ubuntu Packages

Open with Kate file "firefox.txt" in HOME directory (length=1.6Kb).
File was created under WinXP and contain cp-1251 text + english phrases.
Enable Kate plugins: explorer, search, terminal.
Message:

The application Kate (kate) crashed and caused the signal 11 (SIGSEGV).

Приложение: Kate (kate), сигнал SIGSEGV

Thread 1 (Thread 0xb59aa700 (LWP 6758)):
[KCrash Handler]
#6  0xb40803a3 in KateFileLoader::open (this=0xbfc4b884) at /build/buildd/kde4libs-4.2.3/kate/document/katebuffer.cpp:180
#7  0xb407bdcd in KateBuffer::openFile (this=0x86bace0, m_file=@0xbfc4bba4) at /build/buildd/kde4libs-4.2.3/kate/document/katebuffer.cpp:529
#8  0xb4062405 in KateDocument::openFile (this=0x86b63e8) at /build/buildd/kde4libs-4.2.3/kate/document/katedocument.cpp:3376
#9  0xb7e6596a in KParts::ReadOnlyPart::openUrl (this=0x86b63e8, url=@0xbfc4bcf8) at /build/buildd/kde4libs-4.2.3/kparts/part.cpp:558
#10 0xb7ebae6f in ?? () from /usr/lib/libkateinterfaces.so.4
#11 0xb7ed3b0c in ?? () from /usr/lib/libkateinterfaces.so.4
#12 0xb7eae100 in KateApp::startupKate () from /usr/lib/libkateinterfaces.so.4
#13 0xb7eaee83 in KateApp::initKate () from /usr/lib/libkateinterfaces.so.4
#14 0xb7eaf18c in KateApp::KateApp () from /usr/lib/libkateinterfaces.so.4
#15 0xb7f0d421 in kdemain () from /usr/lib/libkdeinit4_kate.so
#16 0x08048672 in _start ()
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Reproduced when open again.
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Kwrite editor open this file, but Crashes too on switch editor encoding.
OOO open this file without problems.
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if you need this file, i will send it to you.