Hi - Thank you for this help. I eventually found another way to fix the problem.
First I tried the steps you recommended (closing J, deleting contents of * ~temp* folder, restarting J) but this gave the same error message. Then I tried opening the package manager and updating the *base *package - which apparently was slightly out of date. Now my *base *package is version 6.2.50, and my *data/jdb* package is 1.0.18, and the *sandp *demo is working fine. Regards. === bill lam wrote: > That works for me. you might try this, 1. type at session jpath '~temp' to get the location of temp folder. Make sure it exist and you have permission on it. 2. close J session and then delete all files inside that temp folder 3. restart J session and try again. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm