Qt cannot bring up apps on QNX

Hi everyone,
I recently built Qt4.8 on Ubuntu virtual machine for x86 QNX6.5.0 virtual machine. When I created an application, built, deployed and ran it, the application did not run on the QNX side. But when I ran the deploy application on the QNX side, it did run normally. Is there something missing of my qt configuration? (The eclipse (qde) installed along with qnx sdp can start the application on the QNX side normally. )
Could anyone shed some light on this issue? Thank you in advance!