I would greatly appreciate if someone can tell me how to solve the issue I have been facing. After creating a large sparse matrix (6300 by 8300 matrix), I saved image of it in my work space to do further computation. Since then whenever I start R (version 2.5.1 on Windows XP, SP2), I seem to get an error: " Fatal error: unable to restore saved data in .RData" and then R crashes. I reinstalled R, and same thing happens. Thanks in advance for suggestions. Sid Dalal --------------------------------- Pinpoint customers who are looking for what you sell. [[alternative HTML version deleted]]