DStarRepeater with MMDVM - Invalid data received

[iw9grl]

Hi

after some trials, I have DStarRepeater that works fine with MMDVM, but with the last firmware there are randomly errors in the log like these :

E: 2017-06-05 12:54:41: Invalid data received from the MMDVM
M: 2017-06-05 12:54:41: Data
M: 2017-06-05 12:54:41: 0000: E0 E4 ..
M: 2017-06-05 12:54:41: Unknown message, type: 0C
M: 2017-06-05 12:54:41: Buffer dump
M: 2017-06-05 12:54:41: 0000: E0 50 0C D0 E0 0F 11 9F 49 A0 41 92 77 CC E1 E0 .P......I.A.w...
M: 2017-06-05 12:54:41: 0010: 25 1E D0 E0 0F 11 BB CB A8 71 10 76 DC 60 E4 21 %........q.v.`.!
M: 2017-06-05 12:54:41: 0020: 0C C2 E0 0B 01 01 01 40 1C 00 00 00 00 E0 0F 11 .......@........
M: 2017-06-05 12:54:41: 0030: 9F 49 A0 41 92 77 CC E1 E0 25 6F B3 E0 0F 11 EF .I.A.w...%o.....
M: 2017-06-05 12:54:41: 0040: 4C A4 01 01 23 FB B5 B0 39 18 AA E0 0F 11 9B 49 L...#...9......I
M: 2017-06-05 12:54:41: Unknown message, type: 08
M: 2017-06-05 12:54:41: Buffer dump
M: 2017-06-05 12:54:41: 0000: E0 25 08 C1 E0 0F 11 BF EB 2A 79 B2 72 DC A3 EC *.%.......y.r...
M: 2017-06-05 12:54:41: 0010: 3C 6F B3 E0 0F 11 8F 8B 22 59 31 3F E8 B0 A0 25 <o......"Y1?...%
M: 2017-06-05 12:54:41: 0020: 76 A3 E0 0F 11 v....
M: 2017-06-05 12:54:46: AMBE for IW9GRL Frames: 27.2s, Silence: 0.0%, BER: 0.0%

with hangs during the QSO , I noticed the problems are only during RX, randomly after few seconds or after a minute .
I don't know why ..... have you some ideas ??

thank you
regards