I just downloaded the Beta 3 files, uploaded them into a test folder. 

I was going to install, but I get this error when I visit the site:

Fatal error: Call to undefined function IPS\mb_internal_encoding() in /home/profootb/public_html/spotv2/init.php on line 104

Any idea what's going on here?

You need to enable the 'mbstring' module in PHP on your server. If you're unsure how to do this or don't have the access to do so, you may wish to ask your host for assistance.

Thanks - There was once a file you could download that would run all the requirements beforehand to make sure your server was good for 4.0. But if you go to that blogpost, the download link doesn't work anymore. That'd probably be the easiest thing to provide to my host. 

EDIT: Just got an answer from my ticket. They've now fixed that link to the download file. 

 

 

Thanks for the help!