Roto Brush 2 worked just fine and now the layers don't load and the blue bar never finished

Umm, no. That's never going to work and that isn't what RB is meant for. Rotobrush looks for patterns across time, not simple pixel borders on tiny characters that loook like game sprites. Cutting out your LEGO minifigure will require using traditional masks or frame-by-frame processing in Photoshop. Really not much else to say. Again, you are trying to use the wrong tool/ methodology here.

Mylenium

That's not realyl useful without any info about your system, your project or for that matter the RB settings. based on your screenshot one could only assume that this is a much longer clip than the actual segement you are using and that causes the effect to analyze forever and fill up your caches, in turn causing the issues when data gets corrupted.. so start by flushing your disk caches, clear the analysis and start from scratch again. anything beyond that will require much more specific info. Also, if you really only want to work on short segements it may help to hard-trim them be rendering the short bits and reimporting them using an intermediate format.

Mylenium