An attempt was made to expand the "app" constand before it was initialized 是啥意思啊？拜托各位了

Question

这是我安装巫师2时遇到的，无法安装下一步骤啊！求各位大侠帮解！

Answer 1

An attempt was made to expand the "app" constand before it was initialized =试图对正在扩大“应用程序”constand之前初始化