When I duplicate a part of some clip and put it on another track, OpenShot is frozen (nothing works)

[Juan Jesús Paredes Guerra]

I use OpenShot 1.4.3, into UbuntuStudio 16.04 LTS, 64 bit version, into an Intel Core i5 CPU, with 8 GB of RAM and 1 TB HDD.

I tried to duplicate a part of a clip, which was into Track 1, to the other track (my idea is to repeat this part, as a background image, with the main clip image into another part of the main clip).

When I played it, OpenShot was frozen, I mean: nothing worked.

From a while (2 or 3 minutes), OpenShot was closed by the system and I got the typical Ubuntu error message.

I tried this 3 times, all the times I got the same situation.

How could I fix this? ???

Thanks a lot for your time!!!

Greetings & Blessings from Chile!!!!!!!

Juan