#1 MUMMER error running GARM

[Xabier Vazquez-Campos]

Hi,
I can start GARM but once MUMMER starts, it delivers the following message:

ERROR: mummer and/or mgaps returned non-zero
WARNING: A MUM was found extending beyond the boundry of:
Reference sequence '>velvet.genome1_NODE_6124_length_225_cov_98.893333'

Please check that the '-n' option is activated on 'mummer2'
and try again, or file a bug report
Attempting to continue.
Any idea how to solve this? I'm using AMOS 3.1.0, MUMMER 3.23, perl 5.18
Thank you in advance