"Mailing has stopped" or "CSD-Mailing Prod has stopped" error when refilling postage on the SendPro CX Series

Restarting your device then refilling the postage can often resolve the mailing has stopped or CSD-Mailing Prod has stopped errors.

Products affected: SendPro® CX 100, SendPro® CX 200, SendPro® CX 300 and SendPro® CX 500

Issue

The error messages "Mailing has stopped" or "CSD-Mailing Prod has stopped" appear when you try to refill postage from the postage refill option in the Settings menu.

Cause

Due to a software bug, the refill option in the Settings menu will return the errors "Mailing has stopped" or "CSD-Mailing Prod has stopped". There are plans to fix these errors in a future software update.

Resolution

To clear the error either tap the back arrow or reboot the device.

Solution 1: Press the back arrow.

  1. Swipe down from the top of the screen.
  2. Press the back arrow.

Solution 2: Reboot the device.

  1. Unplug the power cord. The screen turns off after 10 seconds.
  2. Wait 30 seconds.
  3. Plug the power cord directly back into a wall outlet. Check that the wall outlet is working correctly.
  4. Quickly tap and release the power button to turn the device back on.

Next, refill postage.

  1. Tap Print Postage on the Home screen.
  2. Tap Refill Postage.
  3. Enter the refill amount and tap Refill Postage.

UPDATED: October 12, 2026