did you already upgrade to the fixed version on pub & sub 1 ?
if you already upgrade from v10.0.1.10000-24 to v10.0.1.11006.1 on publisher & sub1, before you install subs 2 & 3, you must install first cucm v10.0.1.10000-24 and then you choose the patch menu when the starting CUCM installer. and then you put the ISO fixed version v10.0.1.11006.1 into DVD.
some error interrupt when installing the secondary node on cucm because the primary node having 2 version active & incative CUCM after doing upgraded. you need make it same version on secondary node.
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.