[ferret_users] help

Dear All,
Ferret version v6.93 is installed in my machine. When I try to plot data, a white empty space appears and I get the error below...
This could memory issue. I have tried fixing but I cant.
My machine is 64bit OS,and ubuntu version 14.04. I have installed SPM and using both vim and gedit text editors.
yes? use GPCC.nc
*** NOTE: Axis coordinates are decreasing-ordered. Reversing ordering for axis lat
yes? use GPCC.nc
yes? show data
     currently SET data sets:
    1> ./GPCC.nc (default)
name     title                             I         J         K         L         M         N
PRECIP   GPCC Monthly total of precipita 1:720     1:360     ...       1:1320    ...       ...

yes? fill PRECIP
**ERROR: request exceeds memory setting: 342 Mwords were requested.
*** NOTE: You can use SET MEMORY/SIZE=xxx to increayes? set data GPCC.nc

*** NOTE: The "Memory use" section of the FERRET Users Guide has further tips.

In some other cases when set to feret i get the following errors
**TMAP ERR: non-existent or not on line
/opt/Ferret/V693/data:/opt/Ferret/V693/go:/opt/Ferret/V693/examples:/opt/Ferret/V693:contrib/GPCC.nc
se memory.

thank you

Best Regards

George Otieno

Intergrated Climate System Modelling Lab.

Department of Environmental Atmospheric Sciences

608-737, Room 4302, Chungmu-Building

Pukyong National University,

45,Yongso-ro,Nam-gu, Busan, South Korea

Tel. +82-51-629-6643

Fax+82-51-629-7991