ERROR: Could not parse input from 'stdin'.

[sophie-03]

Hi, I am trying to run nucmer but I get the following error when I try to run it with my data:

1: PREPARING DATA
2,3: RUNNING mummer AND CREATING CLUSTERS

reading input file "out.ntref" of length 32921472

construct suffix tree for sequence of length 32921472

(maximum reference length is 536870908)

(maximum query length is 4294967295)

process 329214 characters per dot

#....................................................................................................

CONSTRUCTIONTIME /Users/sophiematthews/software/mummer/MUMmer3.23/mummer out.ntref 25.92

reading input file "/Users/sophiematthews/Masters/mummer/star10_gamb/nucmer/../chr10" of length 27243750

matching query-file "/Users/sophiematthews/Masters/mummer/star10_gamb/nucmer/../chr10"

against subject-file "out.ntref"

COMPLETETIME /Users/sophiematthews/software/mummer/MUMmer3.23/mummer out.ntref 71.19

SPACE /Users/sophiematthews/software/mummer/MUMmer3.23/mummer out.ntref 58.33

4: FINISHING DATA
ERROR: Could not parse input from 'stdin'.
Please check the filename and format, or file a bug report
ERROR: postnuc returned non-zero

I have run this many times before on different datasets and have not had a problem, I have checked all my input files and there does not seem to be anything that would prevent this from running - could you advise?