Are you sure you have 1750-4v. You cannot just order the plain 1750. You need the one with 2v or 4v. That means that it has the DSP's with it. Is the pvdm light on that is on the 1750. If it is not that means you do not have any DSPs.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.