Hi,I have already uninstall the previous version (Qt 4.8.6 ) on my machine, but it still don't work.When I Build Vaa3D it reminded me "LINK : fatal error LNK1181: can't open input file"e:\Qt\4.7.2\demos\shared\release\demo_shared.lib"".I know this is because qt compile is wrong. And when I use qt 4.7.2 Build plugins,the error is same as before. So maybe the problem was not plugin initialization issue when using Qt 4.8.6?