#77 Error during Audio encoding (or AVS file creation)

When trying to encode an AVI file to MKV during the audio encoding the process the following message is obtained:

Error in AVS File: AVCSource: The input file is not a DGA project file.
(D:\Program Files\MiniTheatre\MiniCoder\temp\file.avs, line 1)

[Anonymous]

Error log generated at the time of error