新手用modelsim atera 仿真的烦恼

我是第一次用modelsim altera6.5B仿真，一直都是出现这种情况，请大侠们帮我解决一下，我实在是搞不定了




Error loading design
# Error: Error loading design
#        Pausing macro execution
# MACRO ./compare_run_msim_rtl_verilog.do PAUSED at line 12
vsim work.compare_vlg_tst
# vsim work.compare_vlg_tst
# ** Error: Failure to obtain a Verilog simulation license.
# Error loading design
# Error: Error loading design
#        Pausing macro execution
# MACRO ./compare_run_msim_rtl_verilog.do PAUSED at line 12
vsim work.compare_vlg_tst
# vsim work.compare_vlg_tst
# ** Error: Failure to obtain a Verilog simulation license.

Error: Failure to obtain a Verilog simulation license.

这句是关键

我晕 license啊