fixed potential bug for cases where get_current_folder() == None
fixed potential bug for cases where get_current_folder() == None

jjberry/Autotrace,arizona-phonological-imaging-lab/Autotrace,jjberry/Autotrace,arizona-phonological-imaging-lab/Autotrace,JRMeyer/Autotrace,JRMeyer/Autotrace,JRMeyer/Autotrace,arizona-phonological-imaging-lab/Autotrace,jjberry/Autotrace,arizona-phonological-imaging-lab/Autotrace,arizona-phonological-imaging-lab/Autotrace,jjberry/Autotrace,JRMeyer/Autotrace,jjberry/Autotrace,JRMeyer/Autotrace