Error while deploying web part

[Zoom1234]

Hi,
I am creating my first web part.
Below is the code in my .cs file.

protected override void RenderWebPart(HtmlTextWriter output)
   {
      output.Write(SPEncode.HtmlEncode(Text));
      //Create a Lable
      Label myLabel = new Label();
      //Write the Text
      myLabel.Text = "Hello World";      
      //Add the lable control to the page
      this.Controls.Add(myLabel);
      //Render the Html output
      myLabel.RenderControl(output);               
   }

The web part gets uploaded successully, but while importing the web part i am getting error page with message : The "WebPart1" Web Part appears to be causing a problem".
Not sure what does that mean.
Can someone explain me how to overcome this error?

TIA