sansa fuze+ division by zero on accessing 32GB sdhc-card while building database

[saxifraga]

Having recently bought a sansa fuze+, I installed rockbox without any problems.
Database builds fine using SDHC-card up to and including the size of 16Gb.
32Gb cards play music fine, but as soon as during an attempted database build the card gets accessed,
I get this division by zero error (byte details vary with exact rockbox version):

using rockbox version rockbox-sansafuzeplus-d06779d-20130207:
/// begin ///
Divide by zero at 60080D54
pc: 60080D54 sp: 600D60E4
   A: 600D6720
bt end
/// end ///
(this is with tiny black chars on white background)

I tried with 2 different Samsung cards (MB-MSBGA/EU: class 10 + (MB-MPBGB/EU: class 6 / UHS-1)), all filesystems are FAT32.
This problem is present in all versions of rockbox I used, starting with 8ecbcad-121226
Please help!