DE2 SDRAM/SOPC NiosII to Multisim help

Howdy, new to the forums, sorry if this is a repost but I could not find exactly what I was looking for.

My current goal

1. Create a VHDL design that can make use of the SDRAM on the DE2 development board.

2. Once it is shown to work on the LEDS I need to simulate it in mulitsim.

So far the best option I have found is to use the SOPC builder and add the SDRAM controller though the NiosII processor.

This and using the assembly file from the "Using the SDRAM memory on the Altera's DE2 Board with VHDL design" Altera Tutorial I was able to make the LEDS light up from the data sent to the SDRAM (part 1 complete)

However, I am having one hell of a time getting anything to run in multisim. Using the SOPC builder I tell it to also create simulation files when I create the SDRAM controller portion of the system, but there are read and write operations that make multisim fatal error before it can simulate.

So the last option I found was to follow these steps

In SOPC builder choose Tools --> Options...

once in here there is a dropdown menu that shows MentorGraphics ModelSim - Altera. which is what I want, but when try to choose the application path it will not let me actually choose the .exe file, it just will not show up.

So I tried just chosing the containg folder where the multisim.exe was located.

But obviously since i am posting here this refuses to work

I end up getting these 2 errors

Error: Could not find the simulator file unnamed_sim.mpf in \\mtucifs3\home\desktop\EET\AInternship\Sdram_SopcBuilder\JustSdram\unnamed_sim

Info: If you have not set the HDL Simulator Path (under Tools > Options), do so and regenerate.

Any help in this matter would be hugely appreciated :-P