[R] Not able to save the work space

[ahmad at bpe.agr.hokudai.ac.jp]

Hello,

I am trying to save my work space but I recieve the following message error in save.image(name), how can 
I overcome this problem?

Ahmad A. Al-Mallahi
Laboratory of Bioproduction Engineering
Graduate School of Agriculture
Hokkaido University
Sapporo-Japan