id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 10998,OS X 10.6 Host & Guest: Upgrade from 4.1.8 to 4.2.1 results in Guest Boot Crash,wyrdR,,"Upgrade VirtualBox from 4.1.8 to 4.2.0 causing crash of VM on boot; i.e. Fails to boot, Kernel Panic. Both Host & Guest are Snow Leopard Mac OS X 10.6.8 Server. Downgrading back to 4.1.8 fixes problem - i.e. VMs not damaged irretrievably. Tried: * Straight upgrade: ERRORs * Exporting VM from 4.1.8 then removing the re-importing into 4.2.0 - ERRORs * Remove VM; Re-add new VM with old vdi (fresh, default settings): ERRORs ",defect,closed,other,VirtualBox 4.2.0,fixed,"panic,osx,os x,snow leopard,4.2,upgrade",,OSX Server,Mac OS X