[Problem]Guild Allies and Enemies

Well after two days of having a go at this, and one day of asking people for help, I finally decided it was time to ask the community for help.
Well I am trying to load allies from the Guilds.dat file.
They are defined as

Code:

public Dictionary<uint, string> Allies = new Dictionary<uint, string>();

When something is added to the dictionary its like this.

Code:

Allies.Add(GuildID, GuildName);

Now when saving to the guild.dat file, its saved like this.

Code:

            BW.Write((int)Allies.Count);
            foreach (KeyValuePair<uint, string> kvp in Allies)
            {
                BW.Write(kvp.Key);
                BW.Write(kvp.Value);
            }

And when loading, it loads like this.

Code:

            int a = BR.ReadInt32();
            {
                for (int i = 0; i < a; i++)
                    Allies.Add(BR.ReadUInt32(), BR.ReadString());
                
            }

I get an error at Allies.Add(BR.ReadUInt32(), BR.ReadString()); when loading.
Unable to read beyond the end of the stream.
is the error I get.
Any help?