Do you have other browsers open to the webUI? What is the specific error you are talking about here:
As mentioned previously, even with a completely new install, there are some things still with the dynamix name because dynamix is the webUI itself.
Looking at the syslog in these diagnostics, I can see that no plugins are loading. And no plugins exist on flash.
But I can also see that you have some files on flash that are not the defaults, such as user share settings. And other cfg files are not default either.
Your disks are assigned and mounted and you even have an unclean shutdown.
Is your new flash a Sandisk Cruzer Glide?
Somehow you are confused about having made a new install.