In Flash Media Interactive Server, the reloadApp administrator API or HTTP command doesn't work properly. This issue occurs when the numprocs value of the <Distribute> tag in Application.xml is greater than 1 and no instance is defined.
Call reloadApp and specify a target instance of the application that you want to reload. For example, to reload the two instances _definst_ and redinst, call reloadApp twice. Then, specify _definst_ in one call and redinst in the other call.
The <Distribute> tag in Application.xml contains settings to distribute the load of Flash Media Interactive Server applications over multiple core processes. The numprocs value identifies the number of core processes to distribute the load. The <Scope> tag identifies the level at which to distribute the load (VHost, Application, and so on). If numprocs is greater than 1, any core could be running any application instance because the load is randomly distributed. If reloadApp is called without naming an application instance, only the _definst_ instance reloads. Any other instances that share core as the _definst_ instance are shut down. Instances on cores that do not contain _definst_ are left running.