Important about mods

is mods compatible with gdt 1.6.15 ?

and is it necessary setup mods with ultimatelib ?

yes, mods are compatible.
if a mod was made with ultimatelib then yes, you’d have to install ultimatelib too but it’s not a general requirement.

i tried but it didn’t work

for instance , camelot expansion pack is red and it didn’t work

Most of the mods need ultiamatelib and Camelot is one of them

Expansion pack and camelot not working together why??

Some mods does not work with other mods