Plutonium

Hey
When i downloaded the plutonium launcher i clicked the exe but couldnt manage to open it because there was this white box that kept buffering. Normally it would say after a while "Install now" but it didnt for some reason and its been stuck like this for some time. I know for a fact that it is not my computer either since i have a decent gaming computer. I also tried reinstalling it many times but it did not work. Could you please help me?