Crypto error: Can’t read format version

[baumanj]

See https://forums.habitat.sh/t/crypto-error-while-starting-supervisor/1009

This error message could be improved:

1. Always report the particular file that yielded the error
2. If the file is zero-length, report that

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. We value your input and contribution. Please leave a comment if this issue still affects you.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. We value your input and contribution. Please leave a comment if this issue still affects you.

[mwrock]

Closing due to lack of activity and the above link is no longer valid. I also can't find a reference to that error message in the code.