I'm using the FlyTreeView where some nodes are populated from directories and files by the PopulateNodes event. In this scenario, sometimes and not frequently, the node being expanded hangs displaying the 'Loading ...' message. I tried to work around this by setting the setPopulateNodesOnDemand(true) in javascript when collapsing the node. Subsequent expands on this failed load, do not repopulate. Have you seen this? Any idea on fixing or working around? I would prefer to fix it on the original load.