When installing an instance of a VMware vSphere vCenter Server virtual appliance, version 6.0 Update 1, I ran into an issue who's cause wasn't very apparent. While deploying the vCSA through Google Chrome, the process hung at the following step: Installed iPXE-1.0.0-1.2882051.vmw.i686.rpm.

The deployment log files are located at: C:\Users\vmwareUser\AppData\Local\VMware\CIP\vcsaInstaller\sessions\session_0004\logs. The logs gave no indication of the problem.

This was ultimately due to an incorrect configuration within DNS. The DNS entry was not setup for the vCSA. After creating the correct DNS entry and restarting the deployment, it completed successfully.

Using Veeam Backup & Replication version 8.0 with a VMware vSphere 6.0 Update 1 system I ran into the error below when trying to connect to an ESXi host -

Failed to login to by SOAP, port 443, user "root", proxy srv: port:0
Unknown API version format: "dev"

The actual version installed was 8.0.0.817.

Version 8.0.0.817 does not support VMware vCenter and ESXi 6.0, vSphere 6 support was added with Veeam Backup & Replication 8 Update 2. Update 3 is now available can be be downloaded from the following link: Veeam Backup & Replication 8.0 Update 3.

After installing the update, I was able to connect Veeam Backup & Replication 8.0 to ESXi 6.0 Update 1 hosts.

Veeam does not modify their download links as updates are released. As of today, the current downloadable version is still 8.0.0.817. Note that they do include a link to a Update 3 on the download page. If installing a new copy of Backup and Recovery for use with vSphere 6.0 products, first install Backup & Replication 8.0.0.817, then install Update 3.
Veeam Backup & Replication 8.0 Download