Read several posts on this issue, examined my SD cards for compatability, reset all settings and then made adjustments for recording all over again. This issue suddenly occured after having made several very good videos. Even though this may make me seem stupid - i'm going to say it anyway. Press the record button to start recording (obvious) BUT press the record button again when you're finished recording and BEFORE you remove your SD card. For some reason i began removing the SD card when i finished without pressing the record button. (I guess i was in a hurry) When i pressed the record button at end of video all is well again. May not work for everyone but it did for me. Thanks.
