We had similar issues with Flash objects and other controls. They all seem to be caused by the fact that the page views are hidden using "display: none". The browser doesn't render them at all in this case and this seems to confuse a lot of controls.
Using visibility: hidden seemed to help in this case. I'm sending you a sample page that you can adapt to your scenario. You need to replace the flash object with your OLAP control.
I hope this helps.
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