Adding a new ET200S station to a Profibus configuration

Hello,

I have a problem when trying to add a new ET200S station to an existing Profibus config in COM Profibus. The original config consists of a TI545-1104 CPU connected to 14 x ET200B Profibus nodes. When I try adding the ET200S and exporting to a binary file all looks good and there are no errors. When I try merging the binary file into the TISoft backup the new station does not appear, but the old ones do and there are no errors displayed.  If I try and add the ET200S on its own and then merge the binary file into the backup the error 'Illegal number of slaves configured' is displayed.

Any help would be much appreciated 

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Split from Problem with configuration of slave IM153-2 / 153-2BA02-0XB0 / in COM PROFIBUS v3.3 software on S5 - IM308C PB network.