fu4m 1.3 fix-2 doesn't work with IBX higher than 11.0.6000.6324, IMHO that is why Mirakagi has error on Windows with IBX 11.0.6000.7000.
Before using fairuse4wm from the fu4wm 1.3 fix-2, you need to run mirakagi that enters the IBX keys into the FairUse4WM blackbox-keys.txt text file.