Did you read this post?I was trying to download the PSC for mt4 on my Mac. I watched the tutorial and followed all the steps but can't seem to get it. The problem is when I drag over the positionsizecalculator folder over to mt4(open a data folder/mql4/indicators) it won't copy over. it doesn't appear in indicators, I tried dragging it over as well as copying it and can't seem to get it. Anything you can suggest