Weird Problem With DE3 USB Host Demonstration

[Altera_Forum]

Hello My Friends, 

 I tried and spent a lot of time to running USB Host Demonstration Example on DE3 board through Nios II SBT instead of Nios II IDE (Legacy). Unfortunately, I failed and gave up.   What I Did: USB Host Demonstration works fine when using demo_batch or importing software files (project_usb_host) to nios II ide and run it. Now I know the demonstration work fine with the de3 board and it's time to move to the next step (conversion). I have two method to convert from nios II ide to sbt:  1. convert (project_usb_host) using nios command line (nios2-convert-ide2sbt) and then importing converted files to nios II sbt. 2. create new project on nois II sbt and copy software files from (project_usb_host) to new project. I tried both of them and successes in compilation but failed in running.    What Happens: When using nios II ide (legacy) and run the software, the 8 leds on the board blinked (blue, yellow, then red) and the 3 leds for USB lights (blue light), so that I can plug usb mass storage or mouse and see response on nios console. But when using nios II sbt and run the software, the 8 leds on the board also blinked, but the 3 leds are not light, and no respone on nios console when I pluged usb mass storage or mouse.   Help Me, Please Thanks.

[Altera_Forum]

Really great. Thanks for good idea.

[Altera_Forum]

My problem solved but I don't know why it solved like this :) 

 I just change toolchine from MinGW Nios II GCC4 (which is a default one when create or import new project for SBT on windows) to Cygwin Nios II GCC and recompile the new project. So why I have to change toolchine type ??

[Altera_Forum]

please, any help !!!