Solved! Go to Solution.
I changed ViewerStrings.properties by ESRIMessages.propertiesbut that is likely where you have introduced the issue.
-locale=es_ES -source-path=locale/{locale} -keep-all-type-selectors=trueit works just fine.
I changed ViewerStrings.properties by ESRIMessages.propertiesbut that is likely where you have introduced the issue.