Pack conversion

[samuelpineau-droid]

Hi, I just created a new pack in Studio, saved it and now i can see it in my library in yellow as V1. I'm now trying to convert it in FS (v2.x) but as I hit the button I got this little pop up saying "Conversion du pack dans la bibliothèque" but then nothing happens, the pop up message stays here forever (I've been waiting for almost 45mn) but the pack doesn't convert. I'm using Studio 0.4.2 and my Lunii is a v.3
first time I got this issue, I used to apply the exact same method before with no problem... Anyone could help? Thanks