Trying to Simulate PLL MegaFunction In ModelSim

[Altera_Forum]

I'm pretty new to using modelsim. I have a really simple design with just a PLL, and I wanted to test it using modelsim. However, when I try to run the simulation I get an error stating the following: 

 Error: (vsim-3033) D:/altera/11.0/testproject/testpll_syn.v(141): Instantiation of 'testpll_altpll' failed. The design unit was not found.  I guess I'm missing something in my library? I'm pretty lost so if someone could point me in the right direction I'd really appreciate it.

[Altera_Forum]

I assume that you're simulatin using Modelsim and a testbench. 

 Are you sure the you instantiate design to be simulated using the verilog name otf the file that contains the PLL?  Do you have in you design directory the files: altpll0.v altpllo.qip etcetera?

[Altera_Forum]

Yes, I have all those files in my design directory. And I'm pretty sure its being instantiated correctly.

[Altera_Forum]

Should be something simple. 

 Can you devise what testpll_altpll is? Is it the top level entity of your design?  Can you upload your testbench and the files that describe your design?