I was trying to render a Tiff sequence into any kind of quality and LRT wasn't working on the render. It only render a video of 2-3 frame.

I saw de log files and found out that the problem was the buffering, cache or something like that of Java. I was running a Java 32 bits version on a Win 64 bit platform. So I downloaded Java 64 bit and problem solved!

That's important - just make sure to change the encoder in the LRTimelapse settings under "External tools" to ffmpeg64.exe too!

Thanks for this

I had a similar problem exporting (I didn't get any error message though. But it just exported the first frame), installed x64 java and changed the export tool to x64.

I also reloaded the plugin in LR before I tried to export again. Worked on the first attempt after these changes!