anyone ever experienced...

has anyone ever had their machine start beeping in the middle of a job and a box come that says something like: All audio data will be lost in ten seconds, insert a formatted sd card??? and then the mic stops working and it says: all audio data lost?

Mine just did that and I guess I lost the audio on the file i was workin...g on and now it won't turn back on. now I don't know if I lost all my audio on my sd card or just this file. 

Are you using a Mira?  I remember once I had a corrupted file and the audio was missing.  I called Stentura tech support and they were able to resolve my problem.  It sounds like a glitch in the sd card.  I hope you're able to retrieve the audio file and haven't lost others, but do back up everything that's on that card if you're able to.  Good luck.