Dash Rascal fails a md5sum.
Before patching: 015349134f135196d2c2522a1f559055 Dash Yarou (Japan).nes
After patching: 8c7934df1f8e341dd27690615e149e4d Dash Yarou (Japan).nes
md5sum of ROM from author's home page: 8c7934df1f8e341dd27690615e149e4d Dash Rascal.nes
md5sum listed on http://www.romhacking.net/translations/2214/
Removing the 16 byte ines header didn't help either. Furthermore, the file size listed here is 54.84 KB which the ROM certainly is not (unless you look at the zipped size).
This may be related to the md5 problems I've had with Dragon Knife, which comes from the same person.