ModelSim 10.3d Create/Edit Waveform

I am having problems creating a waveform in ModelSim Altera SE 10.3d.

I am trying to follow the tutorial "Getting Started with Quartus II Simulation Using the

ModelSim-Altera Software" but I am unable to create the clock waveform. Instead of

the green clock waveform shown in figure 1-5, the waveform windows shows a broken

red line.

Configuration:

* Windows 7 64-bit

* Quartus II V15.0.0.145 Web Edition

* Qaurtus II V15.0.1.150 Patch

* ModelSim SE 10.3d

Steps Followed:

* In Quartus II select "Start Analysis and Elaboration"

* From "Tools" select "Run RTL Simulation"

* In ModelSim window select "Counter" under "Work"

* Right click and select "Create Wave"

* Right click on "/counter/clk" and select "Create/Modify Waveform"

* In the "Create Patter Wizard" select Clock

* A broken red line is shown instead of a green clock signal.