@stonstad The plugin doesn't try to use ConcurrenctDictionary, and it has its own ConcurrentQueue implementation for platforms it doesn't have implemented. However, it would generate a compile error only. No threads are used by the plugin, but other thread related classes are still there, usable and used. One example of these is the Interlocked and its methods. My demo page is compiled from the very same source than what's get distributed and it has no crashing while ConcurrentQueue is used every time when there's an event to dispatch (so quite frequently).