按照Mini6410 Qt4和Qtopia编程开发指南-20101228.pdf上教的做第一个mycalc程序，编译成长可执行文件mycalc后，执行以下命令
# cd /opt/qtopia-free-2.2.0/
# ./run& 结果出现Cannot create lock file as an old version of QVFb has opened /tmp/qtembedded-root/QtEmbedded-0. Close other QVFb and try again
，我之前安装了qtopia-extended4.4.3,是不是和这个有冲突呢？
