VersionControlServer.DownloadFile reports "Item $/ Cannot be found in version T"

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C#

Hello all,

In my C# code, i have a block of code that does this:

protected bool DownloadLatestVersionFromTFS(string serverURL,
    string serverPath, string localFile, bool setReadOnly)
{
    if (string.IsNullOrEmpty(localFile)
        || string.IsNullOrEmpty(serverURL)
        || string.IsNullOrEmpty(serverPath))
        throw new ArgumentException("Object reference not set to an instance of an object.");
    ICredentialsProvider provider = new UICredentialsProvider();
    using (TfsTeamProjectCollection tfs = new TfsTeamProjectCollection(new Uri(serverURL),
        provider))
    {
        Logger.GetInstance().WriteLog("Connecting to TFS on " + serverURL + "...");
        tfs.Authenticate();
        Logger.GetInstance().WriteLog("Get latest version: " + serverPath + "...");
        VersionControlServer vcs =
            (VersionControlServer)tfs.GetService(typeof(VersionControlServer));
        vcs.DownloadFile(serverPath, localFile);
        if (File.Exists(localFile))
        {
            Logger.GetInstance().WriteLog("Download complete.");
            // set the read-only bit on the downloaded file
            if (setReadOnly==true)
                File.SetAttributes(localFile, FileAttributes.ReadOnly);
            return true;
        }
        else
        {
            Logger.GetInstance().WriteLog("Download failed.");
            return false;
        }
    }

Logger is my own singleton Logger class. Anyway, I run this function in my console application and it works fine on my development machine but then when I deploy it on a remote server with VStudio and TFS installed, it doesn't work, saying

"Item $/MyProject/Folder/MyFile.sql was not found in source control at version T."

Weird...

Am I doing something wrong?

Brian