Valve has warned us of a compatibility issue in an upcoming set of Linux betas for Orange Box. Metamod:Source 1.6.1 corrects this issue. Once Valve rolls out the update (beta or not), Linux users should upgrade.

We don't know the full extent of the compatibility issues yet, but it's quite possible that SDKTools (a popular but optional component of SourceMod) will break on Linux. If that's the case we'll post more information when we have it available. We're confident that any binary compatibility breaks will have workarounds, though turnaround time may not be instantaneous.

Changelog:

• Fixed crash bug against mods compiled with GCC-4.2 -fvisibility=hidden
• API wrappers for GetUserMessageInfo() now have failsafe fallbacks since the OrangeBox SDK fixed an older SDK's crash bug.
• Removed FCVAR_REPLICATED from MM:S ConVars.

As always, though, we are committed to making Metamod:Source compatible with every Source update as soon as we possibly can.

More info and the downloads at MetaModSource.net.