Matlab compiler: "Could not source the install agent"

Hello,

I have 2014a, just got the Compiler (ver 5.1), and developed a package with runtime downloaded from web for a client with Windows 8.1. I have 64 bit computer/Matlab with Windows 7, 16GB memory, not sure what the client has in terms of bits & memory. Client got the "Could not source the install agent" message.

Suggestions for them to try? I have looked up other people's answers, and the client tried downloading the runtime from the Mathworks site

Thanks.

Doug Anderson