I've made a report for SSRS 2008. the report has 4 parameters that are hierarchical in nature (You pic something from the 1st param, it loads the 2nd param list based on that 1st param. Then you pick something from the 2nd param, it loads the 3rd list... etc).
When I make more than 1 parameter change before clicking "View Report", the parameter bar disappears entirely - not the Hide mode, where you can click on the arrows to open it, but FULLY gone. The screenshots tell the tale.
How can I stop this?