I have two compute to run CFD analysis.No.1 is using butterfly in windows 7 with virtualbox. No.1 is not running virtualbox,but using the windows 10 subsystem linux to running OpenFOAM native version.No.1 has the low computational capabilities.No.2 has the higt computational capabilities. No.1 is using OpenFOAM 1612+ version.No.1 is using OpenFOAM 1712+.So i have to copy the OpenFOAM folder which generated by butterfly to the No.2 for calculate. During the process, the blockMesh and snappyhexmesh can run without error.But the simpleFoam ran with error. I do not konw how to fix the error. Anyone can help me???