Here's your problem:

[quote]Level Heavenly Voice
Description Heavenly_desc
EffectsDescription Heavenly_effects_desc
Threshold 3]/quote]

The level must match the description and effects. Therefore, instead of 'Heavenly Voice' it should be 'Heavenly.' --

Level Heavenly
Description Heavenly_desc
EffectsDescription Heavenly_effects_desc
GainMessage Heavenly_gain_desc
Epithet Heavenly_epithet_desc
Threshold 3
Additionally, your entries in export_descr_vnvs_enums.txt should read as such:
[quote]Pleasant
Pleasant_desc
Pleasant_effects_desc
Charming
Charming_desc
Charming_effects_desc
Heavenly
Heavenly_desc
Heavenly_effects_desc
Heavenly_gain_desc
Heavenly_epithet_desc

Make these changes and your descriptions should be visible :)