Custom content center library disappears while editing

[Orest_iy]

Hi,

I have numerous issues when my custom content center library disappears in a whole or a part while editing without much apparent reason.
It does not show up after Inventor restart, however other libs are fine.

When it happens, I swap a lame .idcl copy with a backup and it is working.

Now I am always making a backup copy before editing but just curious whether there is a possible treatment or reasons why it happens.

Inventor 2014

[bradeneuropeArthur]

Is it a desktop content center or a vault content center?

[Orest_iy]

It is a desktop Content Center custom lib