Using viewcollapseall in the postopen of a view

Hello:

I have a database I had been using in version 7.02 and now I am testing to move it to version 8.5. In most of the views I have a single command in the postopen method to collapse the view so that it will always show the main documents first. I get an error saying “can not execute specified command”. Is this a known problem? Is there a work around or fix? Please help!!!

Thanks

Subject: I’m experiencing the same issue

But only when I embed the view on a page with a “Show single category” pararameter.