SmartAssembly.InformationException: Could not find a part of the path running commandline, GUI works

I am running SmartAssembly from TeamCity via command line. I just updated to use the SQL server for report storage, and a network share for the SA Maps. It seems when I run commandline, SmartAssembly can't locate the network drive for storing the maps, but building the same SA project in the SA GUI works fine. I have the both processes running as the same user to rule out network permissions. This error only shows up when building project with error reporting enabled.

SmartAssembly v6.11.1.433
Copyright c Red Gate Software 2005-2017
Loading project <<myproject>>.saproj
Loading...
Starting...
Analyzing...
Preparing...
Creating assembly...
Failed
SmartAssembly.InformationException: Could not find a part of the path 'S:\Products\Docs\Software\SmartAssembly_MAPS\{<<my_guid>>}.samap'.
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