VSTO 2010 excel addins cannot be loaded on target xp machine

Question

I published my excel addins with clickonce on vs2010. It`s prerequisites contains .net framework 4 client,vsto 2010 and installer3.5.

Deploying it on win7 works well,when I deploy it on xp,installing no error occured, but it(com) cannot loaded when run excel app.

I tried mang mehods,only when I manually installed .net framework 2.0 or 3.0 or 3.5 my addin will appear

I donot know why.

thanks