It was conflict with function drift from Financial Toolbox Matlab. Uninstalling Financial Toolbox problem solved. Best regards, Illya
Sorry probably it is not a realy a bug and it is just my misunderstanding. I install AT from svn add path and try to run talk.m to start study this code. But I discover that in MATLAB R2017b what I use, function "drift" is reserved since R2008a. what create a next error: Loading SPEAR lattice in spear2.m Error using drift Too many input arguments. Error in spear2 (line 20) DR01 = drift('DR01' ,1.344800,'DriftPass'); Error in talk (line 9) spear2 Best regards, Illya