Here’s a handy tip if you get the following errors in your OSD build
CreateProcess failed. Code(0x80070002) Command line execution failed (80070002) Failed to execute command line '' . The system cannot find the file specified. (Error: 80070002; Source: Windows)
Basically this error is occurring when using a ‘Run Command Line’ step in the Task Sequence.
The command you are attempting to executed needs to start with cmd /c to run successfully.
SCCMentor - Paul Winstanley 
Thank you, this worked for me. Any idea why this is? We recently moved from SCCM 2012 to the current branch, and there are a number Run Command Line tasks that worked fine before but now fail until cmd /c is added. Some other command lines still work without being modified, so clearly something has changed with how these Run Command Line tasks are being processed.