Oh and also, could you provide us with the application logs? Their locations are:
/Users/[user]/Library/Containers/com.dell.ToadForApacheHadoop/Data/.dell/ Toad for Apache Hadoop/[version]/log/log4j.log
/Users/[user]/Library/Containers/com.dell.ToadForApacheHadoop/Data/.dell/ Toad for Apache Hadoop/[version]/.metadata/.log
Regards
Lukas