"未将对象引用设置到对象的实例",这个问题怎么解决，急呀！

为什么C1TrueDbgrid会有这个错误
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(GZID));
this.panel1 = new System.Windows.Forms.Panel();
this.textBox3 = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.button = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.panel2 = new System.Windows.Forms.Panel();
this.GZAdviceIDGrid = new C1.Win.C1TrueDBGrid.C1TrueDBGrid();
this.panel3 = new System.Windows.Forms.Panel();
this.TotalCost = new System.Windows.Forms.TextBox();
this.label8 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.AdviceID4 = new System.Windows.Forms.TextBox();
this.label7 = new System.Windows.Forms.Label();
this.AdviceID3 = new System.Windows.Forms.TextBox();
this.label6 = new System.Windows.Forms.Label();
this.AdviceID2 = new System.Windows.Forms.TextBox();
this.label5 = new System.Windows.Forms.Label();
this.AdviceID1 = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.button2 = new System.Windows.Forms.Button();
this.panel4 = new System.Windows.Forms.Panel();
this.tabControl1 = new System.Windows.Forms.TabControl();
this.tabPage1 = new System.Windows.Forms.TabPage();
this.GZAdviceItemGrid = new C1.Win.C1TrueDBGrid.C1TrueDBGrid();
this.tabPage2 = new System.Windows.Forms.TabPage();
this.panel5 = new System.Windows.Forms.Panel();
this.GZAItemManageGrid = new C1.Win.C1TrueDBGrid.C1TrueDBGrid();//这里报错，不知为什么？白白天
this.panel6 = new System.Windows.Forms.Panel();
this.btnBatchDelte = new System.Windows.Forms.Button();
this.button6 = new System.Windows.Forms.Button();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.button5 = new System.Windows.Forms.Button();
this.textBox5 = new System.Windows.Forms.TextBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.radioButton2 = new System.Windows.Forms.RadioButton();
this.radioButton1 = new System.Windows.Forms.RadioButton();
this.button3 = new System.Windows.Forms.Button();
this.UpdateButton = new System.Windows.Forms.Button();
this.label9 = new System.Windows.Forms.Label();
....
}以上是窗口初始化的部分代码。白天还好，晚上几个有C1TureDbgrid都出现这个问题，也就是因为这个问题我
重装了系统xp和2003.net,以及C1TrueDbgrid 控件集，但没好多久又这样了，
为什么？