This happens on the latest builds of Vegas Pro 15 (416) as well as Vegas Movie Studio Platinum 15.
When importing video files from a Casio EX-FR10 v2 action camera, Vegas will often crash while generating the visual representation of the audio (if I'm fast enough to cancel the process I can deal with it). Even when it works the audio is loud static. The audio works fine on the Windows 10 "Movies & TV" app as well as VLC player, and I can import the audio in to Audacity correctly. I only use the audio from the device for scratch audio to sync, but having it completely non-functional and getting program crashes if I don't cancel that visual audio peaks generation, it turns into a big hassle. My workaround is extracting and re-adding the audio with Audacity and trying to visually align the imported audio to my mouth moving, but it turns into a big process.
Codec details pulled from VLC Media Player:
Audio (doesn't sound right and crashes Vegas):
IMA WAV ADPCM Audio (ms)
Sample rate: 44100 Hz
Video (the video appears to be fine):
H264 - MPEG-4 AVC (part 10) (avc1)
Frame rate: 30
Decode format: Planar 4:2:0 YUV full scale