Before trying to connect your Inkredible(+) bioprinter with the PC/MAC software, you need to disable SD print in the LCD of the Inkredible(+) printer.
To disable SD printing:
1) On the main menu, nagivate to the utilities menu.
2) Press the Disable SD print option
3) Reconnect your printer to your computer and connect to Heartware (PC) or Repetier Host (MAC).
Please contact firstname.lastname@example.org if you are still unable to connect.