Fit uploads appear to be malformed

[EXR]

Hi everyone,

We have been hard at work adding FIT file support to our app, but now it turns out that the FIT file won't upload to Strava both manually and through the API.

Strava is giving us the following error: The upload appears to be malformed and we are unable to process it.

When we try uploading our files to https://www.fitfileviewer.com/ our files appear to work correctly. When exporting from the fitfileviewer and importing it again in Strava it also works even though it appears to be the exact same file.

Can someone help us finding out the reason why our original files are malformed? 

You can download a test fit file from us here: https://drive.google.com/file/d/10DUyvzxBUu8z4fNtd_ZnmfI1ymlvtrTA/view?usp=sharing

Thanks!

[Ifor Powell]

Well the FitToCSV tool in the SDK is saying the crc is bad.