I guess I'm responding pretty late here, but I hope it helps. I had the same issue as you. The crashes for me came when milkdrop was trying to call any of the s_printf_l or s_scanf_l functions. the locale info was causing the crash. I haven't found the root cause, but I have found that if you switch those calls to the print/scan versions without the locale info, it works just fine to get it up and running. More research would be required to find what is wrong with the locale part that should be fixed....