For the 5-series, yeah, that's all normal. Don't bother trying to run under warnings mode, as you'll get flooded with errors such as those. There is minimal error checking...
What I want you to do is grab the
6-series Trial Version and install it elsewhere on your server.
If it installs properly, then the problem is somewhere in the existing 5-series installation. But if it also locks up, then it's more likely to be a server configuration issue rather than a problem with the boards themselves.