Collapse in my project! Help

Good afternoon. I install the pro version. After that, my project breaks. Installed in a clean project. After transferring a folder in my project. It also does not help. !! There is a collapse of the project. - (((What to do ?? I can not do something right ??. version unity 5.5.0p4 (64-bit)

Could you add a few more details of what exactly breaks?

After the installation is imported. After that, a message appears collapse. As more details write ??

What exact errors are you getting?