The problem manifests itself when I do the following:
1. I continiously serach string in the document, the I patch it by hand (not closing search window, here and later).
2. I encounter a big chunk of code to replace, so I select it and try ctrl+x.
3. Boom!
Not sure if anything of below is of use:
Problem Event Name: APPCRASH
Application Name: devenv.exe
Application Version: 10.0.30319.1
Application Timestamp: 4ba1fab3
Fault Module Name: visuald.dll
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 00108f31
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1049