SAFE PROBLEMS
A nasty safe bug was introduced with 1.5x -- the path shown in the header of SAFE and LOAD was no longer created, so without manual creation a safe error occured . Now this should create the missing path and some additional checks are done. Users which started on 1.4x do have the path already, so creating is skipped.
by the way, PLEASE REPORT BUGs and Problems into the DISCUSSION first before you write a negative review which is not helpful, also describe the problem and used PC, OS etc as good as possible - I will try to fix problems ASAP.