Error when starting SignalTap from MATLAB

The code:

addpath(genpath('C:\altera\11.1\quartus\bin64'));
alt_signaltap_run

Error appear when run alt_signaltap_run. At next, Matlab crashes.

Q11.1sp2, Matlab 7.12.0 (R2011A), Win7x64 installed.

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Microsoft Visual C++ Runtime Library
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Assertion failed!
Program: ...
File: d:/SJ/nightly/11.1/173/w64/p4/qu.../mex_si...ain.cpp
Line: 142
Expression: ver_handle
For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts
(Press Retry to debug the application - JIT must be enabled)
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Abort    Retry   Skip   
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Why? How to fix it?