Our project (SUBDIRS) contains 2 resource .pro files (libraries) with QMLs. At the moment all qml_*.cpp files including qmlcache_loader.cpp are being generated into the same folder (where makefiles reside).
Thus all qml files must be placed into the same .pro file as otherwise qmlcache_loader.cpp files will be overlapped and qInitResources_*() methods for qrc files in another .pro will be missed.
Specifying output path for quickcompiler in the .pro - would solve this issue.