I have been working in Autocad LT MAC OS Ex El Captain.. for several years all of my projects eventually have this issue. Every project starts from a template files I have created, but happens most in Arch D (24 x 36) and Arch E (36 x 48)..... at some point along the project all of my objects jump to the bottom left hand corner and every line I try to draft also.  It is quite frustrating and I have to constnatly turn off ob snap while working...

Any help is appreciated.   My other coworkers use these templates and don't have this issue.  

Katie