Running the Flex client with the SHN EZSrve (no url address) has not worked for some days. Don’t know what changed with that configuration but I have a query into Simplehome about that. Running the Flex client with my EZSrve has been working for along time (with the need to refresh some times to get login screen). Don’t know why you are having a problem unless as you say the network is not bringing down the full client. The Adobe Flash plugins normally stay pretty current so it is probably not a plugin level problem.
The Device View/Control screen was not displaying device status correctly for devices that were added without the DevClusters file. There is another topic under EZSrve that covers this. Running with the latest level of DevClusters is important for correct device operation in V2.