win7 x86, upgraded my build 538 which had been working fine, to 539. selected autoconfig, it for some reason decided to add my d: drive (sata hard disk) to the cache list. i allowed that in addition to my memory and usb drive. system crashed after rebuild, on restart would not boot.
managed to get into safe mode and remove eboostr. booted fine. reinstalled build 538, system crashed on reboot. went into safe mode, looked at d: drive, deleted the eboostr folder. rebooted OK, seems my system does NOT like having eboostr cache itself on the sata hard drive. it could be because the drive is encrypted with bestcrypt and possibly the bestcrypt driver is loaded after eboostr's??
anyhow, reupgraded to 539 and am being careful NOT to select my D: drive as a cache drive. seems OK for now...