Check for valid qmlviewer executable.
Check for valid qmlviewer executable.

pcacjr/qt-creator,colede/qtcreator,sandsmark/qtcreator-minimap,KDAB/KDAB-Creator,sandsmark/qtcreator-minimap,colede/qtcreator,martyone/sailfish-qtcreator,darksylinc/qt-creator,enricoros/k-qt-creator-inspector,jonnor/qt-creator,yinyunqiao/qtcreator,KDE/android-qt-creator,enricoros/k-qt-creator-inspector,xianian/qt-creator,martyone/sailfish-qtcreator,malikcjm/qtcreator,AltarBeastiful/qt-creator,darksylinc/qt-creator,xianian/qt-creator,renatofilho/QtCreator,jonnor/qt-creator,malikcjm/qtcreator,jonnor/qt-creator,darksylinc/qt-creator,martyone/sailfish-qtcreator,KDAB/KDAB-Creator,danimo/qt-creator,kuba1/qtcreator,ostash/qt-creator-i18n-uk,renatofilho/QtCreator,hdweiss/qt-creator-visualizer,colede/qtcreator,danimo/qt-creator,danimo/qt-creator,ostash/qt-creator-i18n-uk,maui-packages/qt-creator,duythanhphan/qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,ostash/qt-creator-i18n-uk,farseerri/git_code,KDE/android-qt-creator,malikcjm/qtcreator,richardmg/qtcreator,syntheticpp/qt-creator,martyone/sailfish-qtcreator,dmik/qt-creator-os2,kuba1/qtcreator,amyvmiwei/qt-creator,KDE/android-qt-creator,colede/qtcreator,colede/qtcreator,AltarBeastiful/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,yinyunqiao/qtcreator,AltarBeastiful/qt-creator,jonnor/qt-creator,renatofilho/QtCreator,darksylinc/qt-creator,duythanhphan/qt-creator,dmik/qt-creator-os2,sandsmark/qtcreator-minimap,Distrotech/qtcreator,KDE/android-qt-creator,omniacreator/qtcreator,bakaiadam/collaborative_qt_creator,enricoros/k-qt-creator-inspector,enricoros/k-qt-creator-inspector,danimo/qt-creator,bakaiadam/collaborative_qt_creator,amyvmiwei/qt-creator,xianian/qt-creator,darksylinc/qt-creator,kuba1/qtcreator,azat/qtcreator,xianian/qt-creator,darksylinc/qt-creator,azat/qtcreator,maui-packages/qt-creator,malikcjm/qtcreator,yinyunqiao/qtcreator,amyvmiwei/qt-creator,azat/qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,pcacjr/qt-creator,Distrotech/qtcreator,AltarBeastiful/qt-creator,farseerri/git_code,yinyunqiao/qtcreator,maui-packages/qt-creator,dmik/qt-creator-os2,syntheticpp/qt-creator,yinyunqiao/qtcreator,pcacjr/qt-creator,sandsmark/qtcreator-minimap,Distrotech/qtcreator,syntheticpp/qt-creator,omniacreator/qtcreator,colede/qtcreator,bakaiadam/collaborative_qt_creator,dmik/qt-creator-os2,pcacjr/qt-creator,martyone/sailfish-qtcreator,sandsmark/qtcreator-minimap,bakaiadam/collaborative_qt_creator,hdweiss/qt-creator-visualizer,maui-packages/qt-creator,farseerri/git_code,hdweiss/qt-creator-visualizer,KDE/android-qt-creator,KDE/android-qt-creator,renatofilho/QtCreator,KDAB/KDAB-Creator,azat/qtcreator,jonnor/qt-creator,pcacjr/qt-creator,azat/qtcreator,farseerri/git_code,KDE/android-qt-creator,omniacreator/qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,martyone/sailfish-qtcreator,richardmg/qtcreator,enricoros/k-qt-creator-inspector,omniacreator/qtcreator,ostash/qt-creator-i18n-uk,martyone/sailfish-qtcreator,malikcjm/qtcreator,yinyunqiao/qtcreator,sandsmark/qtcreator-minimap,martyone/sailfish-qtcreator,danimo/qt-creator,renatofilho/QtCreator,duythanhphan/qt-creator,hdweiss/qt-creator-visualizer,AltarBeastiful/qt-creator,KDAB/KDAB-Creator,darksylinc/qt-creator,kuba1/qtcreator,richardmg/qtcreator,danimo/qt-creator,xianian/qt-creator,hdweiss/qt-creator-visualizer,KDE/android-qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,farseerri/git_code,richardmg/qtcreator,omniacreator/qtcreator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,yinyunqiao/qtcreator,farseerri/git_code,KDAB/KDAB-Creator,omniacreator/qtcreator,malikcjm/qtcreator,kuba1/qtcreator,duythanhphan/qt-creator,xianian/qt-creator,ostash/qt-creator-i18n-uk,pcacjr/qt-creator,danimo/qt-creator,jonnor/qt-creator,ostash/qt-creator-i18n-uk,syntheticpp/qt-creator,enricoros/k-qt-creator-inspector,amyvmiwei/qt-creator,colede/qtcreator,malikcjm/qtcreator,richardmg/qtcreator,dmik/qt-creator-os2,richardmg/qtcreator,farseerri/git_code,ostash/qt-creator-i18n-uk,syntheticpp/qt-creator,dmik/qt-creator-os2,kuba1/qtcreator,richardmg/qtcreator,bakaiadam/collaborative_qt_creator,duythanhphan/qt-creator,bakaiadam/collaborative_qt_creator,maui-packages/qt-creator,danimo/qt-creator,bakaiadam/collaborative_qt_creator,duythanhphan/qt-creator,syntheticpp/qt-creator,Distrotech/qtcreator,syntheticpp/qt-creator,kuba1/qtcreator,xianian/qt-creator,duythanhphan/qt-creator,omniacreator/qtcreator,AltarBeastiful/qt-creator,pcacjr/qt-creator,renatofilho/QtCreator,farseerri/git_code,xianian/qt-creator,dmik/qt-creator-os2,azat/qtcreator,Distrotech/qtcreator,darksylinc/qt-creator,kuba1/qtcreator,enricoros/k-qt-creator-inspector,Distrotech/qtcreator,xianian/qt-creator,KDAB/KDAB-Creator,hdweiss/qt-creator-visualizer