burn-plugin update -> **ERROR: [ppmtoy4m] Unknown subsampling mode option: 420mpeg2

hi,

ich hab von vdrdevel-1.3.37 auf 1.3.42 upgedatet. seitdem bricht das burn-plugin ab. hier mal mein log:

INFO: [mplex] Audio stream length 1288320 bytes.
INFO: [mplex] Syncwords : 3355
INFO: [mplex] Frames : 3355 padded
INFO: [mplex] Frames : 0 unpadded
INFO: [mplex] BUFFERING min 15 Buf max 395
INFO: [mplex] MUX STATUS: no under-runs detected.
++ executing: sh -c 'nice -n 19 rm
-rf /var/lib/video.00/.vdr-burn.Dxrivc/VDRSYNC.0/*.m[p2]v'
++ executing: sh -c 'nice -n 19 rm
-rf /var/lib/video.00/.vdr-burn.Dxrivc/VDRSYNC.0/*.mp[a2]'
++ executing: sh -c 'nice -n 19 rm
-rf /var/lib/video.00/.vdr-burn.Dxrivc/VDRSYNC.0/*.ac3'
++ started an internal procedure
++ starting sh -c '/usr/share/vdrdevel-plugin-burn/vdrburn.sh MKMENU
'/var/lib/video.00/.vdr-burn.Dxrivc/VDRSYNC.0' '0'
'/var/lib/vdrdevel/plugins/burn'' in internal procedure
logger: <MKMENU /var/lib/video.00/.vdr-burn.Dxrivc/VDRSYNC.0
0 /var/lib/vdrdevel/plugins/burn>
**ERROR: [ppmtoy4m] Unknown subsampling mode option: 420mpeg2
**ERROR: [ppmtoy4m] For usage hints, use option '-h'. Please take a hint.
**ERROR: [y4mscaler] Failed to read YUV4MPEG2 header!
**ERROR: [mpeg2enc] Could not read YUV4MPEG2 header: system error (failed
read/write)!

hat jemand 'ne idee, woran das evtl. liegen kann?

die version stimmt:

1:1.8.0-0.1sarge1