Hi, Erel, Aeric and AOrester0 - thanks for the quick response - but I am still having problems let me recap.
The problem, when I tried to install the "b4i - bridge" the icon is grayed and I get the following message when I click in it.
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Unable to install
"b4i-bridge"
please try again later
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What I have done so far (and please disregard my second post about the compiler error as that problem has simply gone away)
1. I am fully registered with Apple as a developer and have previously debugged, release and published Apps without problems.
2. I started by Issuing a new certificate and provisioning profile - which included the Udid for the new 6S device (I am sure that is correct).
3. I checked the whole process with my old 5S phone - and it works OK (which, to me, suggests most of certification process is OK).
4. I have fully installed the trust certificates no my phone see an old post (thanks to Aeric for the pointer)
B4i-Bridge is an application that you install on the device. It has three purposes: 1. Launch the installation process when needed. This step is done with Apple Configurator 2 if using a local builder (https://www.b4x.com/android/forum/threads/installing-apps-with-apple-configurator-2.128397/)...
5. I have rechecked the Udid and Package has the device ticked.
6. Checked the 6S phone works with other applications I have already released to Apple.
In response to Erel's questions
1. You are using a different certificate or provision profile in debug mode. This is not needed.
I am attempting to install the bridge - I don't understand how the question is relevant?
2. The CPU type (32 bit - 64 bit) setting is wrong under Tools - Build Server - Settings.
I have checked the setting, and it is 64Bit - the phones are 5S and 6S - I believe that is correct.
Thanks again for the help so far, but it I tried again and it still does not work.
Kind regards
Dave