iZotope has updated iDrum to v1.5.1. pHATmatik PRO was also recently updated to v1.5.1.

iDrum 1.51 changes:

• Fixes crash when changing Kits.
• Addresses case where samples are not saved into iDrum Kits.
• Fixed upgrade behaviors.

pHATmatik PRO v1.51 changes:

• Updated all file reading support and added REX2 format support.
• Added Intel-based Mac support.
• Passes AU validation.
• Addresses crash in non-English language installer on Mac OS X.
• Addresses crash during playback.