Unable to set NLS_LANGUAGE - Workflow Builder

When I installed workflow builder for the first time I had the following error

220: Unable to set NLS_LANGUAGE.
210: Oracle Error: ORA-00942: table or view does not exist. SQL text: SELECT NLS_LANGUAGE FROM WF_LANGUAGES WHERE :l IN (NLS_LANGUAGE, CODE)

To fix the error.
1.Open REGEDIT from cmd promt
2.Navigate to My Computer -> HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
3. Find key NLS_LANG and update it to charset value from the below query
select nls_language||'_'||nls_territory||'.'||nls_codeset from wf_languages where code = 'US';
4. Also recommended to do the same for the NLS_LANG key under HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOME2 (or whatever home workflow is installed.