Hello from Russia!
I have firewire audio interface Avid Mbox Pro and Media Composer 8.4 (win 7). If i working in MC sometimes appeared error: "Exception: ADM_ASIO_SEMA_DECREMENT_FAILED" 
And sometimes my system (when im changes application) crash:
Please help me! =)
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Windows 7 64bit, Intel Core i5-4460, 3.20GHz, 16,0 GB RAM, NVIDIA GTX 760