Problem with Sonic MyDVD

Have been using Sonic MyDVD for some time without problems. However have just started experiencing problems when doing a burn
here is the error log

Sense: 03 ASC: 73 ASCQ: 03 (Command 2A)

Px.dll: 3.4.46.500
pxdrv.dll: 1.2.1.0
PxMas.dll: 3.4.46.500
PxSFS.DLL: 3.4.46.500
PxWave.dll: 3.4.46.500
pxwma.dll: 1.0.0.3

Any ideas or advice plse.

My first suggestion, would be to use a better burning app such as ImgBurn.

Aside from that, it is likely a media issue. Try a different brand/type of media.