exporting mailboxes to PST on Exchange 2010

I went through the very good instructions here to export an Exchange 2010 mailbox to PST:
http://exchangeserverpro.com/export-mailboxes-exchange-server-2010-sp1/

But I kept getting errors when doing the mailbox export request.  I didn't track the error, but I'm about 90% sure that the error was related to the file path I was exporting to.  I was attempting to export to a file path of "\\servername\e$\filepath\username.pst"

Once I changed the export path to \\servername\sharename\username.pst - the export succeeded.

Stupid, but something to remember.

Corrupt PST handling (particularly > 2GB files on the old PST format)

I had a case where I exported an old mailbox from Exchange 2003 and could not access the file I exported. The mailbox was larger than 2 GB, but Exchange 2003 could only export 2 GB. When I tried to open the PST file in Outlook, I got "the [PST file] has reached its maximum size." and I wasn't able to open the PST.

Ugh.

I used the PST crop tool and tried to use scanPST - to no avail. The crop tool worked, but scanPST would fail and say it didn't make any changes to my cropped PST file. I tried cropping various amounts and running scanpst. I used a hex editor and altered some parts of the PST as I read other places. No success.

Reading through someone else's thoughts, I was able to use exmerge to import the PST back to an Exchange mailbox. I was able to do this *without* cropping the 2 GB PST.

This was very annoying, but eventually worked using exmerge. If that failed, I would have had to use one of the many paid PST recovery options. The fact that Exchange will export a corrupt PST is absurd. Why would there not be an error if it couldn't complete the export?