First of all, let me tell you that this is not a not working multisite post.
I have been running 2 site now for a while and everything was fine, and suddenly one day i get
Set root category in the category admin tab.
I see the tree on the left, both site work OK. But nothing in the middle page on the admin side (See pics.)
It is the second time that this happens for no apparent reason. Is something changing info into the DB.
Where should i look. It is not a root category issue since both root category are showing there respective products on each websites…
And no, i did not find it the first time, as it came back by itself after playing with updates and permissions.
But I could not pin point the (ROOT) cause of the problem… no to play with words…
It seems that it changes by itself.
Click thumbnail to see full-size image