Outlook 2007 Drag and Drop

I have one user in my whole domain having a issue with drag and drop.  He is using outlook 2007 SP2 connected to exchange 2003.  We also have a document management system called Interwoven filesite also integrated in the outlook.  This particular user also has at least 3 PST archive files connected to his Outlook.  When he tries to drag and drop from inbox it generally works the first time.  After the initial drag and drop the second time he gets the message "outlook cannot move the items. the item cannot be moved".  If i close outlook and reopen it, i can drag and drop 1 time before it happens again.  We originally thought it was a filesite problem but we started reading tons of post about drag and drop being broken int Outlook 2007 SP2.  Anyone please help me please.
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Sounds like the PSTs are being stored on a Network Share / Location.
MS Does not support PSTs stored anywhere else other than the Users Local Drive(s).

If there’s no option to store these PSTs on the local drive, the most you can do is Map the Drive locations where the users PSTs are stored.
This insures the connection to the Network location of the users PSTs.
Also makes sure that they are already connected before the user even opens outlook.

Failing that, I’m assuming these users were not always on 2007 and these users have likely been upgraded from a previous version.
If this assumption is correct: Check to see what type of PST they are using.
Can do this by right clicking on the Personal Folder and choose properties.
Then click on Advanced.

Look at the Format of the File.
It should read "Personal Folders File"

If it Reads "Personal Folders File (97-2002)
This is the old format and is only supported up to 2GB.
Check the File Size to see if they are approaching that mark.

You could greatly increase the performance of these file by creating New ones (PSTs not compatible with 97,98,2000, or 2002) but offer Higher Storage capacity. (Up To 20GB)
JJones312Author Commented:
It turns out that the program that does our document management software has view files which were corrupted.  I removed them and let them build new and i was able to make the software move the message correctly with no errors.

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