Al reproducir un video flash con transparencia aparece con un fondo negro

Hello, I’m new using casparCG, I have a problem, when playing a flash video with transparency appears a black background, can someone help me? How do I update the CasparCG flash player? Thank you.

Search for „black boxes“ in the search up right and you find plenty of posts like this one: Flash template giving black boxes instead of transparancy when mask is applied