Kdenlive segmentation fault when playing video.

[Drawing4Life]

So when I edit a video I need to play it back to see the results. The second I press play it crashes.
I am using Kdenlive version 15.12.3
Using:

• KDE Frameworks 5.18.0
  
• Qt 5.5.1 (built against 5.5.1)
  
• The xcb windowing system
  

The error message I get is:

Removing cache at "/home/linuxlite/.cache/kdenlive-thumbs.kcache"
// / processing file open
// / processing file open: validate
Opening a document with version  0.91  /  0.91
// / processing file validate ok
***********
FOUND GUIDES:  0
**********
[swscaler @ 0x7f0f04973900] Warning: data is not aligned! This can lead to a speedloss
"Creating audio thumbnails (1/1)"
Segmentation fault

[Wirezfree]

Hi,

You have not indicated if you have tried anything.?
Googling for "Warning: data is not alligned!...." gives lots of results, including possible fixes in the first 2 results...