I received this error when I added more music my resources.qrc. The mp3 files are not even that big, you have got to kidding me that this is all the MSVC compiler can handl
There's a workaround for this in Qt 5.4.0 : Use CONFIG += resources_big in your .pro file.
CONFIG += resources_big
.pro
See also the 'rcc' section in the 5.4.0 changelog for qtbase.