Friday, September 2, 2016

Section or group name 'xyz.Properties.Settings' is already defined. This can not be defined multiple times.

Section or group name 'xyz.Properties.Settings' is already defined. This can not be defined multiple times. (C:\whatever.dll.config line [Line Number])

I ended up opening the config file and found a line was duplicated in Configuration | ConfigSections | SectionGroup

Removed it and all was good.

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