On the Mac, Reaktor has recently started appending the file extension to the end of all exports and saves. If you're not concentrating and forget to delete the extension in the save panel before pressing the save button another extension will be added when the file is created.
eg: mymacrorcm.rcm
if Reaktor is running in a host it will keep adding the extension every time it saves via the host and you end up with multiple files instead of one …
myensembleens.ens.ens.ens.ens.ens
If anyone knows a way to prevent this I'd love to know.