GammuDispatcher failed to send SMS: Returned false.

I have sinned: I have done some patching and upgrading.

NAV 4.2.6 FreeBSD 10.2

Upgraded from gammu-1.33.0_1 to gammu-1.36.8. In this version the python bindings is separated into its own library: py27-gammu-2.4.

Something in the new version makes the dispatcher fail to recognize that the sms is successfully sent:

[2016-01-29 14:25:17,799] [INFO] [pid=83042 nav.smsd] Found 1 unsent message(s) for 12345678. [2016-01-29 14:25:27,287] [WARNING] [pid=83042 nav.smsd.dispatcher] GammuDispatcher failed to send SMS: Returned false. [2016-01-29 14:25:27,288] [INFO] [pid=83042 nav.smsd] Setting delay to 45 seconds.

The sms is indeed sent and the receiver gets 4 identical sms-es.

Any ideas?

--Ingeborg