crash pressing DES button

[777]

EIDW -> EGCC

I had begun decent into manchester from Dublin.

had passed TOD and had already begun to descend from FL22 I was changing various pages on the captains fmc & then pressed the des button on the first officers fmc and got this crash.

SID LIFFY5A  STAR MIRSI1B for runway 23R

thanks.

GizmoLog.txt