data mismatch error

This tool is such a great idea, really hoping I can get it to work. I'm getting an error on the `arw_encode | cmp` step:

```
+ ./arw_encode 2752 676352 ../original.arw.flifraw.aPtEHQ/alarms.bin 00
cmp: EOF on ../original.arw after byte 20887040, in line 121083
+ echo data mismatch, temp stuff left in ../original.arw.flifraw.aPtEHQ
```
Anybody else encountered this?