Cannot Edit Footprint from Board

[Anonymous]

Hello, 

There's an error when I would like to edit a footprint or symbol from the schematic or board. 

I explain the situation : 

1- I've got a library on my workspace. For example here "LIB_LMTECHNO" 

2-I place a component from this library in the schematic and the board

3-I right click on the symbol or footprint to access the properties.. I see the name of the library with a big additionnal name (I think a temporary local name)

This issue cause a problem if I would like to edit symbol or footprint from the job : 

1- Right click on Symbol or footprint 

2- Click on "Edit Footprint" or "Edit Device" 

And sometimes, (i think if the local file changed from when i created and placed the component and now) I've got an error : 

Any idea to correct this ?

Thank you 

Regards