Avid Media Composer crushing when initializing Plug-ins

I am unable to open my Avid Media Composer 5.5.x.
It crashes when initializing Audio Plug-ins (that’s when the AMPI error appears).
In general, when I click on it, it displays the following message:

Avid Media Composer
Exception: AMPI subsystem error, Errormessage DSM future error from client eDSMError_Exception: Assertion in “DSM_Transport.cpp”, line 119 (err=1813), DSMManager::InitializeDSM in DSMManager,cpp: 274,
AMPIMainComponentRep::InitializeDSM Failed in AMPIMain.cpp: 81,
AMPIMainComponentRep::Initialize mRep->Initialize in AMPIMain.cpp: 159,
AMPIMainComponentRep::Initialize in AMPIMain.cpp: 163Is there any patch to fix this?
I have:
Windows 7 Professional
Graphics card: NVIDIA GeForce GT240
Intel Core 2 Duo 2.33 GHz processor
Memory: RAM 8 GB
64 Bit OS
Seagate 80 GB 7200 rpm Barracuda Hard Disk
