Modelsim component instantiation error

Hello I have a problem in Modelsim. I created a project in Quartus exporting it in Modelsim with the command Run RTL Simulation, so Quartus correctly exports the project in Modelsim compiling libraries with 0 Warnings and 0 Errors, but when I click on Simulate I get the following error:

"** Error: (vsim-3033): Instantiation of 'bitec_dp' failed. The design unit was not found."

I think this problem depends on the bitec_dp module encryption in Altera, anyhow I don't manage to simulate my project. How could I resolve this problem?