#1 mummer and/or mgaps returned non-zero

[Anonymous]

1: PREPARING DATA
2,3: RUNNING mummer AND CREATING CLUSTERS
# reading input file "out.ntref" of length 479987453
# construct suffix tree for sequence of length 479987453
# (maximum reference length is 536870908)
# (maximum query length is 4294967295)
# process 4799874 characters per dot
#................................................................................ERROR: mummer and/or mgaps returned non-z
ero

[TATIANA]

I got a mummer error.
I ran mummer for two weeks, and it crashed due to low memory last night. One chromosome was left to be processed.
Is it possible to run the mummer only on the remaining chromosome and combine the outputs?