Another historical thread dealing with >44.1kHz samples causing an "illegal file" message.  

https://yamahasynth.com/community/modx-series-synthesizers/hey-yamaha-whats-the-deal-with-wav-and-modx/

Looks like meta data showing >44.1kHz while the underlying PCM data has been converted to 44.1kHz is a possibility for those screenshots which show higher sampling rates.   Melas should probably be able to address this since I'm sure >44.1kHz packs were tested.