Photo contact impossible

[Omalanp]

Good evening,
I'm using DW .... with Android 7.1.1
I encounter a difficulty.
I can not put pictures on my contacts
I select the photo and I validate: a window opens with the following indication:
"Contact has stopped working ... Reopen the app"
What should I do ?
Another question: Is there a transparent theme?
Thanks a lot for your answers.
Omalanp

[devin]

Hello
Try another picture viewer. You can choose transparency in the color settings.