Kernel 5.4.17 won't mount ntfs-3g on Slackware14.2?

So I thought now that -current is using 5.4 kernel and other goodies like PAM, XFCE and KDE latest are finally being talked about for /testing. That I should see if my old platform can even work with a 5.4 kernel. Used the Slackware Docs for HOWTO Upgrade kernel, Have used it for six month to build my own kernels in the 4.14 line. Pulled 5.4.17 and then used zcat to copy working 4.14.169 config to linux-5.4.17/.config. Ran make oldconfig, then menuconfig and accepted most new default settings. Checked the -current changelog to see if Pat turned off any parms I should consider shutting down. Verified VALIDATE_FS_PARSER is not set. NTFS is compiling in to kernel, not as module. But when I boot the 5.4.17 kernel, then it will not mount an old winxp ntfs-3g drive which mounts just fine under 4.14.169. Error is "Failed to access volume /dev/sdb2 (the ntfs IDE drive)

5.4 now has a CONFIG_BLK_CMDLINE_PARSER set to y, that is a new parm not in 4.14 is that needed? Where should I start to look for other clues about the config of 5.4 so that NTFS-3g will mount the drive like kernel 4.14.169? Is this a too old ntfs-3g file issue? Thanks in advance