Access violation writing location

I am currently playing with C# and detours/trampolines using a library I found here:
https://github.com/xcvd/Detours

I am attempting to hook a known function in a game and then call the original function. I am able to successfully hook the function but any attempt to call the original function errors with:

Exception thrown at 0x00E6EEEE in game.exe: 0xC0000005: Access violation writing location 0x0001762C.

This is my setup of the detours

public DetoursManager()
{
    ChatHookDelegate vHookDelegate = ChatHook;
    IntPtr sourceFunction = MemoryService.GetOffsetValue(Process.GetCurrentProcess(), Offsets.HOOK_DSP_CHAT);
    fHookManager.Add("ChatHook", new Hook(sourceFunction, vHookDelegate, vHookDelegate.GetType()));

    CommandHookDelegate vCommandHookDelegate = CommandHook;
    sourceFunction = MemoryService.GetOffsetValue(Process.GetCurrentProcess(), Offsets.HOOK_COMMANDS);
    fHookManager.Add("CommandHook", new Hook(sourceFunction, vCommandHookDelegate, vCommandHookDelegate.GetType()));

    Debug.WriteLine("Installing all Hooks");
    fHookManager.InstallAll();
    Debug.WriteLine("Finished installing all Hooks");
}

Below is my delegate function that I hook (my destination function)

public void CommandHook(IntPtr pChar, string pCommand)
{
    try
    {
        fHookManager["CommandHook"].CallOriginal(new object[] { pChar, pCommand });
    }
    catch (Exception vException)
    {
        Debug.WriteLine("CommandHookException: " + vException.Message);
    }
}

I’m almost 100% certain that the IntPtr pChar pointer I am passing in is accurate as it is a known pointer for something else and matches what I see in memory. Additionally, the hook is passed the pointer to begin with and I don’t change it.

It’s also worth mentioning that I know that at least SOME of the original function is being called because I get output that indicates as such, however, I am just not sure what within the original function is causing the crash/exception and I’m not entirely sure how else to debug this given I do not have the source or pdb for the game.exe I am playing with.

Any tips or suggestions would be appreciated.