Re: Invalid License. Reason Code= Missing DLL:[d3dx9_31.dll] Error: 0x7E

@acsproductions 

It is likely you are missing specific files, downloading and installing the following should help: 

https://www.microsoft.com/en-us/download/details.aspx?id=35

If you happen to have an 'N' Edition of Windows, download and run the following Media Feature Pack, thanks.

https://www.microsoft.com/en-us/software-download/mediafeaturepack