Okay! So I had the EXACT problem uninvited3975 had and though this problem may have been solved in a seperate thread, I was unable to locate any thread and thus was frustrated for the past few days trying to resolve the issue.
If when you open SimPe, the layout is DIFFERENT than what is being shown in this tutorial, click on the 'Reset Layout' button located on the Top Left-Hand side of the screen. It's underneath the 'Window' filetab, and it looks like like a circle with light blue in the middle and a red x on the circle's bottom right side. Clicking this should set things straight.
Phew! I know no one's replied to this in years, but in the off chance this helps someone else from wasting a bunch of time searching for an answer, then all's 'the better I say!