I use the mds model. The error message is as follows

[lanyunxin]

Line search cannot locate an adequate point after MAXLS
function and gradient evaluations.
Previous x, f and g restored.
Possible causes: 1 error in function or gradient evaluation;
2 rounding error dominate computation.

[gesinecauer]

Hi there! Occasionally this may happen. I'd suggest trying a different random seed, that usually solves the problem. You can set the random seed in the config file.

If you are still running into the error after trying a few different random seeds, let me know.