no speed graphs in latest version 96

I have updated to the lastest version yesterday from my previous fully working version.

However this new version works perfectly ok except that my speed graphs do not display even though the counters for the upload/download speeds are working.

All othe bar graphs etc are fine

Is this a bug or is anyone aware of a work around.
Thanks

Please complete your bug report:

- About->System Info
- How to reproduce
- Screenshot

Thank you.
-Mat