Error when launching game WIN7

I installed the game onto my D drive to save space on my SSD that runs WIN7 home edition.
every time that i try to load this game i get:

System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeException()
at System.Collections.Generic.List`1.get_Item(Int32 index)
at System.Collections.ObjectModel.Collection`1.get_Item(Int32 index)
at WingCommanderSaga.Controllers.GraphicsController.LoadCurrentResolution(RegistryKey registryKey)
at WingCommanderSaga.Controllers.GraphicsController.LoadCurrentData()
at WingCommanderSaga.Launcher.LoadCurrentData()
at WingCommanderSaga.Program.Main()



Hopefully someone can point me in the right direction to get this working. i just bought "heart of the tiger" and "The price of freedom" from GOG.com and id like to play this game in between them.

I found that if I used the other .exe file in the dir then the game opened flawlessly. I will download the patch to see if it will help after completing the game. Because its currently working I don't want to mess with it yet. Thanks for the advice!

Luke got it right (I think I didnt explain very well also). I installed .NET framework 3.5 and the regular launcher started working immediately. didnt even have to restart my computer.

the installer for the .net framework is kinda strange though. you click on it and it runs but you never see anything happen. it doesnt even ask if your sure you want to install it. its just done as soon as your done clicking on it.


anyway...
Thanks for the help!