This mod is probably dead at this point, but:

• I'm also seeing the exception posted by others, but can't figure out what causes it
• I did find a likely bug in `CanCraft()`: The first `if()` should probably have parentheses around the OR'd `itemid` checks
• It might be nice if this allowed timed unlock of Tier 1 as well, to encourage folks to visit Outpost/Bandit early on
• `twinfo` shows unlock status but not times - would be nice to see time(s) until unlock(s)
• It would be nice if this were to provide some kind of explicit UI feedback to the user when trying to craft a locked-out workbench - a lock symbol or greyed-out icon in the crafting menus, or a message, or something
• It might be nice if this were to broadcast a server-wide announcement on unlock, since it's kind of a big deal

Update: I've started hacking on this myself...not sure if there's a process for taking over an abandoned mod or not.

Stuff I've been able to address so far:

• Fixed `CanCraft()` to return either `null` or `false` per https://umod.org/guides/development/contributing-hooks
  • Edit: Nevermind, this isn't working - need to look into it more.
• Tier 1 timed lockout support
• (WIP) Message player when attempting to craft a locked-out workbench
  • This was partially implemented, but likely abandoned due to the fact that `CanCraft()` apparently gets called twice. May try to implement a per-player timed lockout or something.
• (WIP) Announce status to player on join
• (WIP) Announce status periodically (or possibly check periodically and announce if state changes are detected

Okay, I've pretty much completely overhauled this mod to address everything I could think of. I should probably release it, but I'm not sure what the process is.

Highlights:

• Supports all 3 workbenches.
• Each workbench can be set to always locked, always unlocked, or to unlock on a given number of seconds after start of wipe.
• Defaults to unlocking tier 1 at 24 hours, tier 2 at 48 hours, and tier 3 at 72 hours.
• Pending unlocks are announced to players on connect, and broadcast globally at 5 minute intervals.
• Elapsed unlocks are broadcast globally.
• User-facing unlock times remaining are reported in D:hh:mm:ss format.
• `twinfo` reports current seconds since wipe, and per-workbench unlock status and seconds remaining (or -1 for always locked).
• Time remaining or always-locked status is reported to user when attempting to craft a locked-out item (with a hack to prevent double messages - could still be improved).
• `twreset` command added to reset lockout times to defaults.
• Last wipe time recorded as UTC instead of local time, which avoids any timezone weirdness.