nucmer "First character must be a '>'"

[juliadouglasf]

Hello,

When running nucmer, I am getting the following message:

terminate called after throwing an instance of 'std::runtime_error'
what(): First character must be a '>', got ''

I have found one other mention of this error, but with no resolution.

The first character of my input fasta file is '>'.

[juliadouglasf]

Silly mistake! My reference file was gzipped. Changing it to a fasta file fixed the error.