HDF-SDS Read Error

[Ajaya Mohan R. S]

I have used the following descriptor file to open an HDF file
using gradshdf (GrADSVersion 1.9b4 in FC3) using open <file.ddf>.

I get the error HDF-SDS Read Error for dtype FLOAT32.

Any idea, about where I am going wrong? Any other suggestion to open
this file in Grads?

DSET ^3B42.980101.3.6.HDF
DTYPE hdfsds
TITLE This is only a test
UNDEF -9999.90
XDEF 1440 LINEAR   0.12500000 0.25000000
YDEF  400 linear -49.87500000 0.25000000
ZDEF 1 LEVELS 1000
TDEF 1 LINEAR 03:06Z01jan1998 3hr
VARS 2
precipitation=>pcp    0  99 Precipitation
relativeError=>error  0  99 Error
ENDVARS


The HDF file used is
ftp://disc2.nascom.nasa.gov/data/s4pa/TRMM_L3/TRMM_3B42/1998/001/3B42.980101.3.6.HDF.Z


best,
Ajayan