I'm working on an app based on the Sample Flex Viewer 1.3. When it first starts up, often not all of the layers appear. However, if you close and reopen the browser a second time then they will probably all appear, and almost certainly appear if you close and reopen a third time. If you don't close and reopen the browser then the layers cannot be made to appear.
I've spoken with others who have this problem on their SFV based sites as long as a year ago, as well. So it is not specific to me.
It seems that there's a timeout on the layers and if the server doesn't deliver the layer to the browser before the timeout, then the browser just goes on like it doesn't matter.
Has anyone found a 100% reliable way to solve this problem and make all the layers show up the first time?