When adding a folder to the path using the path.m function, I get the following warning if the folder is already on the path. Since I add the path in a program, if I run the program twice I get this warning. This problem did not occur with earlier versions of Matlab. (I am running on a Mac).
The warning is: Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict. > In path (line 109)