After a successful boot drive clone using XXClone (which I've used many times quite successfully) I noticed that icons for MS Office and Adobe Acrobat files (and maybe others) are now blank. This is not the case for any multimedia files, program files or shortcuts to programs; just documents, spreadsheets, PDF's etc. including shortcuts to such files. In addition to this anomaly, when I attach files to an Outlook message the icons displayed in the attachment box in the new message are also blank.
I copied the volume serial from the original drive which usually prevents applications like MS Office from wigging out after a drive cloning but for some reason in this particular instance MS Office and Adobe got fussy. The program associations are fine - if I double-click any of the affected files the correct associated apps launch; it's just the displayed icons that are affected
I ran TweakUI's icon rebuild feature but it did not help. However, if I kill and then restart Explorer.exe it corrects the problem until I launch/close a window that triggers a complete explorer refresh. The problem affects views of file icons in all folders either local or network, but as with the desktop I can temporarily fix it by bouncing explorer.exe.
I've used this method to restore missing icons in the systray when I knew a program was resident but not showing up in the tray, but I've never seen this happen with explorer in general like this.