A bracketed sequence is called correct (regular) if by inserting “+” and “1” you can get a well-formed mathematical expression from it. For example, sequences “(())()”, “()” and “(()(()))” are correct

打开unity3d，导入场景，unity3d出现这个错误。 This application has requested the Runtime to terminate it in an unusual way。Please contact。。。。。。。 是因为场景需要unity3d是高版本的，而打开场景的unity3d是低版本的。 此时unity3d是4.2.2的，需要升级成4.5