Unable to install bootloader to diskette since 0.3 series

Last version I've been able to succesfully create a FreeLoader bootable diskette is 0.2.7. Anything newer fails, including latest trunk revision 52450. General testing happens by first installing ReactOS to harddisk with bootloader to diskette, then installing ReactOS to harddisk with bootloader to harddisk.

Files might correctly be written (FreeLDR.SYS/INI, seem identical to those on C but FAT12/16 bootsector appears to be broken, resulting in a literal
"ldr not found"
"Press a key"

Copying FAT16.BIN from ReactOS CD (Loader directory) to A:\FAT16.BSS then chaining through Syslinux gives the same error.

Syslinux's CHAIN.C32 works partially, loading FreeLDR:
CHAIN.C32 file=FREELDR.SYS seg=0x800

but results in FreeLDR.INI not being found (despite being present).

Is there any current working way of getting a FreeLDR bootdisk that can boot recent ReactOS versions?