Folders grayed out in Library Module

[Graphics50]

Hi,

I have the latest version of Lightroom CC.

Today, I opened it and all of my folders in the left pane are grayed out (they were fine a week or so ago, they are linked to folders on my HD).

Is there a reason?

[Graphics50 · Accepted solution]

I have the answer now.

It took like half an hour or so but they are not grayed out anymore. Probably a slow computer.