4.1.1 crashes after a few seconds every time
windows 7 64 bit
Dreamer printer
Unhandled exception at 0x000007FEED11F7C7 (libusb-1.0.dll) in Simplify3D.exe: 0xC0000005: Access violation reading location 0x0000000000000005. occurred
upgraded from 4.0.0
tried 4.1.1 32 bit as well, same failure
help