Improve MWA H5 coefficient file errors
If the tests found a corrupted H5 file (which I accidentally created by ctr+c-ing the download), they give very confusing errors. I've cleaned that up somewhat and made it a bit more resilient to this.
If the tests found a corrupted H5 file (which I accidentally created by ctr+c-ing the download), they give very confusing errors. I've cleaned that up somewhat and made it a bit more resilient to this.