Disk Director 12 creates invalid GPT-initialized USB Flash drives
Disk Director 12.0.3223 on Win 8.1 (current Update 1) finds no problem in cleaning a 32GB (Maxell) USB Flash drive, initializing it as GPT partition style, and creating a FAT32(default 16KB cluster) file system.
But the Windows Explorer then sees it as a 127MB drive with no file system (or a 29GB device with no file system in Computer/Disk Manager). Creating a FAT32 file system leaves it as a 127MB device in Windows Explorer.
On the other hand open source freeware rufus-1.4.9.exe(http://rufus.akeo.ie, Akeo in Ireland) cleans and creates a GPT-style 29GB FAT32(16KB) device that both Windows 8.1 and Disk Director like.
(I used rufus to create a GPT bootable Flash Windows 8.1 installer with bootmgr file deleted so that a buggy UEFI (ASUS Z97) would install Windows 8.1 on a GPT-initialized drive using the bootmgr.efi file).
So it appears that Disk Director 12.0.3223 has a serious bug involving GPT-initialized USB flash drives.

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