Hi, mckenn!
When Apple updated to OS X 10.7, they also changed the SMB protocol to their own solution named SMBx which resulted in losing compatibility for most older printers.
If you absolutely need to scan to this server the easiest way would be using a different protocol, like FTP.
Other ways around it would be having the printer scan to a virtual machine on the server or to another computer.
You could also try using a different version for the SMB, but that's something I'm not familiar with unfortunately.
Best Regards
Kimzi
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