Sometimes, lose docklets icons after restart system

[VENGEL]

My system is Debian 8.2, I installed docky by commond: sudo apt-get install docky.

It will add an Trash dockylet as default, I remove the Trash dockylet, and add a Desktop dockylet, then, I restart my system.

After docky startup, the Desktop dockylet disappeared, I must add the Desktop dockylet again.

It is very inconvenient, I hate it.

I used to found the problem, I found the config file: .local/share/docky/plugins/addin-db-001/config.xml, and made it readonly by:
    sudo chmod -w config.xml

Sometimes, it is ok, but usually the docky can not startup when system power on. I must start docky Manually.

I hope you to solve this problem. Docky is a perfect software, I love it. Thank you.