Hi Taerkhan,
I don't think, that there is a conflict with other mods:
I'm testing my old 0.15 savegame with factorio 0.16 and I also use Bob's suit, RSO, Aspalt, Dectorio beside other stuff and I got no problems with this mod.
Furthermore I started a new game without problems.
But I have a suspicion:
Do you start in a barren envirenment?
Trees will only grow on grass and dirt areas, not on desert for example.
For analysis you can change a parameter in the zip-file:
Change in the file config.lua the parameter enable_debug_window = true - This will give you an ad with tree information.
For faster timeflow use for example the mod https://mods.factorio.com/mods/binbinhfr/TimeTools.
EDIT: Configuration of file config.loa in zip is no longer necessary, pls check game/mod settings.