Accessing FAT32 partition on an APT partitioned drive

I used fjc's FDISK utility to set up a 128mb CF card for my Incognito board. Following his (well-written!) instructions, I initialized the card saying 'yes' to a FAT32 section and using 64mb as the APT. Set up a 65535-sector APT partition, named it, set the drive letter, and closed the disk. After exiting to SDX, I used the FORMAT command to (B)uild directory and the now APT section works brilliantly. I can read, write, etc from SDX.

But now the SIDE loader built into Incognito does not recognize a FAT32 partition. I'm not sure how I'd copy anything to the FAT32, either, as my PC now sees the card as unformatted.

When I run HDDINFO on the card, it shows the following:

Interface:
Device name: Transcend 128M
Bus id: 8.1.1
Sector size: 512 bytes
Sectors: 250368

Dynamic mounting: No
Drive mapping: No
ATR mounting: No

MBR is present

FAT32 start: 170852608
FAT 32 size: 2327

APT start: 118816
APT size: 131072

Am I doing something wrong, or do I just not understand the capabilities of this?