An Interna Error while using quartus II 9.0

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I've solved this problem by your help, thank you very much!

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how to

set_global_assignment -name PARALLEL_SYNTHESIS off

do that

i am trying to complie the example in university program and i am getting

the following error

Internal Error: Sub-system: BPM, File: /quartus/db/bpm/bpm_boundary_port_manager_impl.cpp, Line: 110

m_netlist

Stack Trace:

0x619F : BPM_BOUNDARY_PORT_MANAGER_IMPL::BPM_BOUNDARY_PORT_MANAGER_IMPL + 0x9F (db_bpm)

End-trace

Quartus II Version 9.0 Build 132 02/25/2009 SJ Full Version

please help me