When trying to access sheets for users that are no longer active in the system you some time see an error like this:

[u'User Jones, Sally is not active for the period Monday, 15 August, 2016 to Sunday, 21 August, 2016', u'20160729']
  File "", line 14162, in main
  File "", line 872, in __init__
  File "", line 2027, in initialize
  File "", line 1189, in getUserSheet
  File "", line 1054, in createUserSheet


The local Journyx admin will need to adjust the end date set for the user (in this case above Sally Jones) to be past today.  Then the admin or the original user can take action on the sheet.