Method Not Found Exception in thread C# - winforms

Question

this is baffling me, I would appreciate some help. I have a thread that loads databases from a server in the background into a custom control that I've created.
The thread retrieves the databases just fine, but when I try to access some methods in my custom control i get thrown that exception and I don't know why!!
here's my code:
{
DatabaseLoader = new Thread(()=> AquireDatabases(LoginInfo));
DatabaseLoader.Name = "DatabaseLoader";
DatabaseLoader.IsBackground = true;
DatabaseLoader.Start();
}
private void AquireDatabases(List<Object> loginInfo)
{
DataTable dtDatabases = new DataTable();
try
{
dtDatabases = objBkp.FillCBDatabases(loginInfo[0].ToString(), loginInfo[1].ToString(), loginInfo[2].ToString());
}
catch (Exception ex)
{
string s = ex.ToString();
MessageBox.Show(s);
}
LoadDatabasesinControl(dtDatabases, null);
}
private void LoadDatabasesinControl(DataTable dtDatabases, RunWorkerCompletedEventArgs e)
{
if (InvokeRequired)
{
this.Invoke(new WorkerCompleteDelegate(LoadDatabasesinControl), dtDatabases, e);
return;
}
if (DatabaseLoader.IsAlive || !(DatabaseLoader.ThreadState == ThreadState.AbortRequested))
{
// CLEAR ALL ITEMS IN the control before filling it
serverControl.ClearControl(); // --> EXCEPTION THROWN
for (int i = 0; i < dtDatabases.Rows.Count; i++)
{
serverControl.CreateDatabase();
serverControl.DatabaseName = dtDatabases.Rows[i][0].ToString();
serverControl.lblSubDBSize = 150513; // --> EXCEPTION THROWN
}
}
}
method ClearControl() is a public method in my control, and it returns type void just like CreateDatabase()
also, lblSubDBSize is a regular public label just like DatabaseName!
Why is the exception being thrown on these two only, and none of the other functions I try to access???
I think this is a thread problem but I don't know what it is exactly.
I added my custom control as an existing project and I added the reference to it as a project to my solution instead of as a dll. I read somewhere that that could be that cause but it wasn't, I tried a bunch of stuff with no luck.
Any thoughts anyone???
[EDIT]
serverControl is a custom User Control
public Database database;
private Label lblServer;
private Button btnServerPanelExpander;
private Panel pnlServerHeader;
private List<Database> databaseCollection = new List<Database>();
public ServerControl()
{
InitializeComponent();
ControlInitializer();
}
private void ControlInitializer()
{
lblServer = new Label();
pnlServerHeader = new Panel();
btnServerPanelExpander = new Button();
btnServerPanelExpander.Click += btnServerPanelExpander_Click;
pnlServerHeader.Controls.Add(btnServerPanelExpander);
pnlServerHeader.Controls.Add(lblServer);
pnlServer.Controls.Add(pnlServerHeader);
setProperties();
}
public void ClearControl()
{
if (database == null)
return;
this.pnlServer.Controls.Clear();
this.ControlInitializer();
this.pnlServer.Invalidate();
}
public void CreateDatabase()
{
database = new Database();
database.SetIcon(DatabaseIcon);
databaseCollection.Add(database);
pnlServer.Controls.Add(database.pnlDatabase);
DrawDatabase(database);
}
and here is the stack trace and exception... hope this clarifies things
Exception Message
"Method not found: 'Void ServersControl.ServerControl.ClearControl()'."
Stack Trace
" at Forms.MainSmall.LoadDatabasesinControl(DataTable dtDatabases, RunWorkerCompletedEventArgs e)\r\n at Forms.MainSmall.AquireDatabases(List`1 loginInfo)\r\n at Forms.MainSmall.b__1370_0()\r\n at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)\r\n at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)\r\n at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)\r\n at System.Threading.ThreadHelper.ThreadStart()"