I can reproduce this problem in 1.0.1-r432 and 1.0 release. When PPSSPP tries to load the cutscene before the first boss in 013 Epilogue, it hangs on a white screen. The cutscene does load correctly in 0.9.9.1 release, so some commit between 0.9.9.1 and 1.0 broke it.
I only use PPSSPP on Windows.
Intel Core i3 1.9GHz | 4GB RAM | Integrated Intel HD 4400 | Windows 8.1 x64
Intel Core i3 1.9GHz | 4GB RAM | Integrated Intel HD 4400 | Windows 8.1 x64