[MsNs7]

What can i say.. I wish i knew..
But i don't think that it's a permissions issue. I mean, MetaMod files server.so and server_i486.so files have rwx------ as permissions and the owner is opengamepanel. And MetaMod is being loaded successfully.
On the other hand, SourceMod file sourcemod_mm_i486.so has rwxr-xr-x as permissions, opengamepanel as owner but it can't be loaded.

EDIT:
I just changed the permissions of MetaMod files server.so, server_i486.so and metamod.2.csgo.so to rwxr-xr-x just in case. Unfortunatelly SourceMod still can't be loaded.