Multi-dimensional dataset cannot be opened (a small problem occurs when Dundas's OLAP display control is used)

Recently, I was engaged in a small project related to OLAP, of course, in the Web architecture. I used Dundas controls that are commonly used in the aspect of display. In VS 2005
Developed in this section. during development, every browsing is in the integration environment of Vs, and there is no problem in reading Multi-Dimensional Datasets every time.
But when I want to generate a website and run it on the IIS server, a problem occurs:

I couldn't figure it out at the beginning. Why did this happen? Because I haven't developed similar projects before, and then inadvertently on the page with Dundas controls
A reference is added:

Using Dundas. OLAP. webuicontrols;

Then the website is regenerated, and the problem is solved immediately.

I thought for a moment, this should not happen. I should add them myself when adding control references to the page. I changed two machines.
Child, one of them is the same as me, and the other is okay. I think it should be caused by some minor problems during the installation of.
Of course.

Hope to help you.