Hi there, i've got a server on direwolf 20 pack ..the old edition (1.6.4) and there are a lot of commands in the wiki that don't correspond to real commands in my mod..
It often simply doesn't return anything after i enter a command...it doesn't return error messages or success messages...anything...
And sometimes i enter a command read in the wiki just a little changed in syntax and it works..but now i'm stuck in a permission problem and i'm going crazy..
Is there any "older" wiki for 1.6.4 ? Thank you in advance :)

Sadly, no. 1.6.4 is a very old state of the mod and as I recall, simply was very buggy.
However, the source code is still out there here, so you could dig through that to get information on commands in 1.6.4
https://github.com/ForgeEssentials/ForgeEssentials/tree/371506d90e69ff71fa08a247215a0788ca404f08