"Extraction error (527) - Unable to unzip the recording"
This can occur when trying to import recordings into a project in Morae 3 Manager. Check disk space on C:\ -- this problem is most likely due to low disk space.
To expand the RDG to a temp folder and also to copy it to the Morae project folder, there must be at least 2x the size of your file(s) available on disk for importing RDG files.
It is best to keep at least 5 GB free at all times, as your computer uses this free space for temporary memory and to improve system performance.