[kristop]

Well every page has to have at least one layer (MobileSheets automatically creates one), so let me ask this - does this mean songs in your library with no annotations now have two layers? You said every song in your library was affected, correct? ...
Thanks,
Mike

I can answer for the songs that didn't have any annotations before, it's probably interesting. I see 2 cases :
- those which now have 3 layers : 

• if I unselect the 1st one (with the eye icon), the 1st and the 2d are unselected
  
• if I unselect the 2d one (with the eye icon), the 1st and the 2d are unselected
  
• if I unselect the 3rd one (with the eye icon), the 1st and the 3rd are unselected
  
• if I delete any of the 3, they are all deleted (well, no, there is always a "Layer 1" which remains) on this page only, all others keep 2 "Layer 1" ; if I redo the same on another page, the 2 layers disappear on that page, but all other n-2 pages return to normal i.e. one "Layer 1".
  
• then I quit MobileSheets, and enter it again, and display the same song : the 2 pages in which I deleted layers have now a normal "Calque 1" layer (french name for layer), but all other pages keep one "Layer 1" layers.
  

- those which now have 4 layers : 

• if I unselect the 1st one (with the eye icon), the 1st and the 2d are unselected
  
• if I unselect the 2d one (with the eye icon), the 1st and the 2d are unselected
  
• if I unselect the 3rd one (with the eye icon), the 1st and the 3rd are unselected
  
• if I unselect the 4th one (with the eye icon), the 1st and the 4th are unselected 
  
• if I delete 1, 2 or 3, 2 layers "Layer 1" remain ; if then I delete those 2 layers, BOTH ARE DELETED, on the selected page only (although the "chain"icon is selected) ! I did it on another page, same as before, except that now all other pages have "Layer 1", as normally.
  

In fact, I can do a lot of experiments ! For instance :
- in a 3 layers-type, I changed the name of the 1st layer, now this layer is independent of the 2 others (on all pages) ; and now if I unselect the 2d one (with the eye icon), the 3rd and the 2d are unselected
- When opening a bigger song (22, 24 or 86 pages), I had this message for 2 or 3 seconds : "Modifications détectées dans les fichiers. Changements des fichiers" means : "Modifications detected in the files. Changing the files." I see that only on songs with 2  or 3 "Layer 1".
- But I didn't have this message on a 43 pages song with 4 "Layer 1". Deleting the 4th layer on one page deleted 2 layers on this page, and 1 on all other pages. Deleting the last ot the 3 remaining layers on another page deleted 2 layers on this page, and one on all others (including the 1st page where I deleted a layer)... Doing this again did the same, meaning that I had 3 pages without layers. Then I quit MobileShhet and entered again, the 3 pages without layers got a "Calque 1" layer, as already seen.
- Interesting : with this same 43 pages song. I connected the Companion, edited a minor attribute of this song (tempo). The 3 pages with one "Calque 1" layer have now one "Layer 1" layer, and all others have now 2 "Layer 1" layers. So the bug is really linked to the Companion.

Note that I use the Companion in english... (er... no other choice I think!). Version 3.2.0. On Windows 7 pack 2 64bits. (Yeah, PC from 2012.)

Also: not all songs have been affected by the bug : they have only 1 layer (called "Layer 1" and not "Calque 1", but ... maybe that was from the beginning...). I cannot identify any specificity for unaffected songs compared to others. The size of the song has no impact on the bug (some changed, some unchanged).