– If you need LaserCAD v8.15, I recommend contacting your laser cutter's manufacturer or distributor directly. Many provide legitimate downloads to verified customers.
The "UPD" (Update) version usually addresses specific bugs found in V8.12 or V8.14: lasercad v815 download upd
LaserCAD V8.15: Latest Update, Download, and Installation Guide – If you need LaserCAD v8