I'm using Ubuntu 14.04 (64 bit). After installing leJOS_NXJ_0.9.1beta-3, I was able to flash the NXT device. However, when I tried to upload a program, it showed a message "Found NXT: NXT 0016530CDF15" and then just stuck there.
I also tried Eclipse with leJOS plugin, and got the same problem. It showed Program has been linked successfully Uploading ... Found NXT: NXT 0016530CDF15
and it got stucked there.
Can anybody help me with this issue? Thanks, Thuy