My clean installation:
1.install windows 8.1 pro x64 with update to c:\,then restart pc to winpe, run gimagex make a wim backup.
restart pc to windows 8.1.install comodo firewall,then install avast_free_antivirus ver11.1.2241.1482.
restart pc. all worked ok.
2.restart pc to winpe, format c: (windows8.1),then run gimagex apply backup wim to c:restart pc to windows8.1,install comodo firewall,then install avast_free_antivirus ver11.1.2245.1482.
restart pc. The aforementioned problems encountered。