why QuickUsb.openDevice always return false????

[chenteng85912]

I used quick_usb 0.3.1 version,and run on windows,then I did the following and everything worked fine，
1.QuickUsb.init() true,
2.QuickUsb.getDeviceList() success,
3.QuickUsb.hasPermission(_device!) return true,

but when i did QuickUsb.openDevice(_device!), always return flase,Can someone tell me why？？？？？？？

[rluebess]

I have same, using 0.4.0 on Windows desktop.
Devicelist is filled, but open always returns false...?
Something I forgot to check/install/configure?