Swami fails to load sf2 file

Hi there

 

I'm totally new to sound font editing.

I just need to tweak a sound font in order to make it match the midi keys sent by my electro drum. I can load the sf2 file, make the change, save, but then the sf2 won't load in FluidSynth, and won"t load neither with swami.

So I tried to do a simple example: create a new sf2, add a few wav samples, create a couple instruments and a preset. Save, quit, start swami again and load the sf2 file. I get this error:

(swami:12818): libswamigui-CRITICAL **: Failed to load file '/home/ttk/Batterie/TD4POP2.sf2': SoundFont reader error: Unexpected chunk size (ofs=f9f81d8, traceback ['ibag' ofs=0xF9F81D8, size=168 <= 'pdta' ofs=0xF9F7FD8, size=67988 <= 'sfbk' ofs=0x0, size=262179180])

This is swami 2.0.0 in ubuntu ..

 

Does swami actually work somehow ?

Is there any other sf2 editor out there ? I tried wine + viena but it seems less userfriendly ..

 

Thanks