Abaqus - Error message

Hello everyone,

for the first time since I'm using Abaqus i received this error message. Results seem to be ok however the massage scares me a bit. Any comments? (Abaqus explicit analysis)

"Mismatch detected between lengths of coordinates array and deformation array. This might occur when a user step contains mix of complex and non-complex frames. This feature is not supported currently. a work-around is to convert the non-complex data into complex data by adding imaginary components equal to 0."