Running unity8 repeatly cause "QML Image: Cannot open: ..." error

[handsome_feng]

When I test unity8 through qtcreate or run_on_device.sh script, I often got an error something like "QML Image: Cannot open :file:///home/feng/lp/unity8/qml/Launcher/graphics/focused_app_arrow.png" , and the icon can't open will disappeared on unity8. This usually happened after running unity8 more than 3 times.

I use the newest code in lp:unity8, and now the version number is 1869.

[Albert Astals Cid (aacid)]

Does the file exists?

[handsome_feng (feng-kylin)]

Yes, all exists in the corresponding path.

[handsome_feng (feng-kylin)]

I found that If I rename the icon in source file from [e-mail] to focused_app_arrow.png, This icon will never meet the error "Cannot open ..."