I have just released a new version of the vgm player, V3.42. It fixes a serious bug that I missed with the previous version. Also adds support for V1.61 and V1.70 vgm files.
The bug was this: writing misaligned data to the rom. It turns out that the emulator I use for testing allows reading of misaligned data (Kega Fusion). This emulation inaccuracy is not a bug, it is performance optimization. Original software would never perform misaligned reads as it is a fatal error, so there is no need to pay the cost to emulate it.
When one forgoes real hardware testing one shall get bitten eventually.
Glad to see that you have not abandoned the development of this excellent program.
I have integrated your great program on my Mednafen Frontend.