Since Wednesday I am working with the Caliber Beta (since yesterday 2.99.3) in productive operation. Of course I have made a backup before.
Until now, everything works fine.
I've added books in Caliber, edited with the editor, and copied eBooks to my ›Kobo Aura H2O‹. Everything is OK. I also have no problems with the installed plugins.
A conversion from AZW3 to ePUB has also worked perfectly.
I don't use the server, because I do not need it so far.
My eBook-Reader:
›Kobo Aura H2O‹ with firmware 4.4.9298
My System:
Window 10 64bit, version 1703, build 15063.296
Asus P8Z68-V/Gen3 S1155 Z68 ATX
Intel Core I5 2500K 4 x 3.30 GHz
16GB Corsair XMS DDR3-1600 DIMM CL9 Quad Kit
Zotac NVIDIA GeForce GT 630 ZONE Edition
System drive: ADTA SP550 (SSD)