Scripting

you can create a network share and place the files there and use xcopy /q /y or put 7-zip 7z.exe (command line version) and the zip on the share and call the extact silently from the share

Robocopy. The syntax is more of a challenge but the performance is better than using drag-and-drop in Windows Explorer. If you need a GUI, I have had some success with Double Commander (http://sourceforge.net/projects/doublecmd/).

Run Robocopy in restart mode, which will continue the operation if you are moving the files across the network and the connection is broken (http://technet.microsoft.com/en-us/library/cc733145.aspx).

MAP your server location to any DRIVE

consider S:\Folder\Test Folder to local system C:\temp\ITNINJA

run cmd as admin user

run below commnad

ROBOCOPY SOURCE Destination /MIR

in this case command would look like

ROBOCOPY "S:\Folder\Test Folder" "C:\temp\ITNINJA" /MIR

i hope this help

"It keeps crapping out" isn't a particularly erudite description of the problem, especially as you don't say whether the issue is with the creation, the deployment or the execution of the MSI. That doesn't matter, though: we're all psychic here....

If you use SCCM as your deployment mechanism, that uses BITS to transfer the package to the PCs. There is now an access mechanism for scripts to use BITS, too:

http://blogs.msdn.com/b/powershell/archive/2009/01/11/transferring-large-files-using-bits.aspx