I have a similar problem to that of the original poster, except that the error message refers to VTS_01 rather than VTS_05. I can't follow Cornholio's suggestion, since I didn't create the image, all I have are the MDS and I0x files.
ImgBurn shows trhe following additional information:
Imp ID: Sonic Scenarist 3.0
File Sys: ISO9960, UDF (1.02)
Sectors: 3,459,555 (MODE1/2048)
Size: 7,085,168,540 bytes
Time 768:49:30 (MM:SS:FF)
Is there a way to make the files burnable, or am I SOL?
Thanks in advance,
Unobtainium