There's not too many things that can go wrong if you follow the installation suggestions carefully. This page suggests a few things you can check.
If you are using a Linux server, and BoltWire is not working properly, you may need to verify that the permissions for the boltwire folder and it's subdirectories are set to 755. The field folders should be set to 777. And the index.php files in each should be set to 644. You do not have to worry about file permissions if you are on a windows server. Ask your webhosting company for assistance with this.
If your server is running in PHP's "safe" mode, BoltWire will not be able to properly create folders it can write to through your browser. The solution is to create each site offline, and then FTP them to the server. Better still, find a different webserver!