Gunther, 

Haven't created a TL in over a year.  Have LR Timelapse 3.  Was told I needed to do an update when I went into my LRtimelapse.  Don't know if that has anything to do with it but i received error message when I went to go render video saying, "Could not launch the external encoder.  Please check the log file (info/log) for details.  Have a Macbook Pro and I went to the log file and saved to the clipboard.  Don't know how to get it off the clipboard.  Wanted to show you what went wrong.


Please let me know if you have any suggestions.

Thanks so much.

Did you upgrade your Mac to 10.11 "El Capitan"?
Then you would need to upgrade LRTimelapse to LRT4, since Apple changed the security system and does not allow to call the external programs like before anymore. LRTimelapse 4 adapts to that.
You can get the upgrade in my shop in the section "upgrades and crossgrades". http://lrtimelapse.com/shop