when Audio TC is not recognized by a Sony FS7 most of the time this is the reason: http://forum.tentaclesync.com/question/audio-timecode-3/
The reason for a black screen in Tentacle Sync Studio is not clear yet, does it also happen with only one FS7 file?
Thank you for the swift response! We are using a Sony Fs7 and the MXF-codec . I should perhaps also clarify my question a bit: we have been filming for several days, each day has its own folder and timecode. Some of the days work perfectly fine while others does not (No audio-timecode found). We have used the same settings through the whole shooting and are puzzled about how random it lines up in the sync.