DLMS.c: Timeout when reading ProfileGeneric

Hi,

I'm having an issue reading ProfileGeneric from Landis & Gyr ZMG405. The meter currently has 931 entries in 1.0.99.1.0.255. I read one entry at a time. My read loop is:
for (int i = 1; i <= pg.entriesInUse; i++)
{
printf("Reading index %d", i);
int ret = com_readRowsByEntry(&settings, &pg, i, 1);
if (ret == DLMS_ERROR_CODE_OK)
{
}
else
{
printf(TAG, "Error...");
break;
}
}
It reads up to index 124, after that it times out.

in readDLMSPacket I print out the result of cl_getData.
ret = cl_getData(settings, &frameData, reply);
printf("\ncl_getData %d, %d\n", ret, reply->complete);

After the entry is read I also print out the columns.

Reading index 124
->7E A0 2F 00 02 50 C1 21 76 94 3B E6 E6 00 C0 01 C1 00 07 01 00 63 01 00 FF 02 01 02 02 04 06 00 00 00 7C 06 00 00 00 7C 12 00 01 12 00 00 89 0A 7E
<-7E A0 34 21 00 02 50 C1 96 4E 5E E6 E7 00 C4 01 C1 00 01 01 02 04 09 0C 07 E1 0B 1C 02 0D 1E 00 FF 80 00 01 06 00 80 00 12 05 00 00 00 00 05 00 00 00 00 73 E3 7E
cl_getData 0, 1
dlms Row 0
dlms col 0, 25, -32768, 13:30:00
dlms col 1, 6, 8388626
dlms col 2, 5, 0
dlms col 3, 5, 0

dlms Reading index 125
->7E A0 2F 00 02 50 C1 21 98 E4 35 E6 E6 00 C0 01 C1 00 07 01 00 63 01 00 FF 02 01 02 02 04 06 00 00 00 7D 06 00 00 00 7D 12 00 01 12 00 00 09 10 7E
7E A0 34 21 00 02 50 C1 B8 32 96 E6 E7 00 C4 01 C1 00 01 01 02 04 09 0C 07 E1 0B 1C 02 0E 00 00 FF 80 00 01 06 00 80 00 12 05 00 00 00 00 05 00 00 00 00 6F 7E
cl_getData 0, 0

reply->complete = 0 when requesting index 125. Because of this readDLMSPacket waits for another packet, but the meter does not send one, causing the communication to time out.

If i change the loop to
for (int i = 124; i <= 124; i++)
it works

If i change the loop to
for (int i = 124; i <= 125; i++)
it reads 124, but gets stuck at 125.

Any idea why this happens?