File System

hi… I am working on FS2 mak II file system…
I just gone through the Dynamic C user’s manual
and tried to compile and run the sample programs on file system-FS2.
But the very important function fs_init() itself is
returning nonzero(returning 1)- indicating fs_init() is not successful…
Please help me what are the initial settings we have to set to make fs_init() succesful, Or what is the procedure to be followed while implementing fs2 file system in flash!?

Processor: R3000
Module:RCM3200 with 512k flash,512kFSRAM
and 256K BatteryBackedRAM
Compiler Version: Dynamic C 9.52