For example, 4 Wheel Thunder, US verison gives an error:
vschdman - MAME Compressed Hunks of Data (CHD) manager 0.263 (mame0263)
Output CHD: 4 Wheel Thunder (USA).chd
Input file: 4 Wheel Thunder (USA).cue
Input tracks: 18
Input length: 122:02:00
Compression: cdlz (CD LZMA), cdzl (CD Deflate), cdfl (CD FLAC)
Logical size: 1,344,392,640
Error reading input file (4 Wheel Thunder (USA) (Track 17).bin)'
Compressing, exception occurred: std::exception
Error during compression: Input/output error
Fatal error occurred: 1
I don't know how to report it besides here.chdman - MAME Compressed Hunks of Data (CHD) manager 0.261 (mame0261)
Output CHD: 4 Wheel Thunder (USA).chd
Input file: 4 Wheel Thunder (USA).cue
Input tracks: 18
Input length: 122:02:00
Compression: cdlz (CD LZMA), cdzl (CD Deflate), cdfl (CD FLAC)
Logical size: 1,344,382,848
Compression complete ... final ratio = 42.5%