Ghostscript error on Asian font Windows

Hello,
I have some users in Korea getting this error. The users are on the latest version on PDFCreator and the Windows 10 with default language is Korean. After this error happens, every conversion fails. It look like it got stack in error state and can't recover. Please advise.

pdfforge.PDFCreator.Conversion.Jobs.ProcessingException: Ghostscript execution failed: Error: /undefinedfilename in (C:\Users\sel-heatherk\AppData\Local\Temp\PDFCreator\Spool\2-7EC956F8651E4CBC86D28785DA67CA88.PS)
Operand stack:

Execution stack:
%interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push
Dictionary stack:
--dict:1007/1684(ro)(G)-- --dict:0/20(G)-- --dict:78/200(L)--
Current allocation mode is local
Last OS error: No such file or directory

위치: pdfforge.PDFCreator.Conversion.Ghostscript.Conversion.GhostscriptConverter.DoConversion(Job job)
위치: pdfforge.PDFCreator.Core.Workflow.JobRunner.Convert(Job job)
위치: pdfforge.PDFCreator.Core.Workflow.JobRunner.d__10.MoveNext()<---

2019-03-12 11:04:19.3177 [Fatal] 4716-10 (ProcessingThread) pdfforge.PDFCreator.Editions.EditionBase.ProgramBase.CurrentDomain_UnhandledException: Uncaught exception, IsTerminating: True

Additional Data:
InnerException=pdfforge.PDFCreator.Conversion.Jobs.ProcessingException: Ghostscript execution failed: Error: /undefinedfilename in (C:\Users\sel-heatherk\AppData\Local\Temp\PDFCreator\Spool\2-7EC956F8651E4CBC86D28785DA67CA88.PS)
Operand stack:

Execution stack:
%interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push
Dictionary stack:
--dict:1007/1684(ro)(G)-- --dict:0/20(G)-- --dict:78/200(L)--
Current allocation mode is local
Last OS error: No such file or directory

Thanks.