CEF Extraction Add-on for Splunk - Not Working

All Apps and Add-ons

I've installed the CEF Extraction v1.5.4 for splunk to pass CEF logs, however I still cannot extract both the custom fields and the cefKeys at the same time. i.e. 'cefKeys' works and extracts everything OR cefLabelAfterKey/cefLabelBeforeKey extracts the custom fields but cefKeys no longer works. How do I extract both the custom (e.g. cs1= cs1Label=) and normal (=) fields of the CEF event at the same time?
Has anyone else had this problem?

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