Spectaculator 8.0 and 47loader

Hi all

I'm messing with 47loader (which is GREAT and very fun btw) and I find that Spectaculator usually brings a R:Tape Loading Error trying to load .TZX modified with 47loader. Giving that I'm doing mostly trial&error, I need to know that the failure is mine and not the emulator that cannot handle some combination of turboloader configuration.
Is there any configuration that can be applied on Spectaculator, or it just doesn't support all turbo loaders and I have to use other emulator like FUSE, ZX Spin or ZEsarUX?

Thanks in advance and regards