unity major version 51 is newer than 50, the highest major version supported by this compiler.
如题,
unity build中出现
unity major version 51 is newer than 50, the highest major version supported by this compiler.
代表你的java 版本有问题
请先移除java所有版本,重新下载或是保留java 7即可
并注意修改path与classpath环境变数中内有java路径的部份