Open Modular Turrets is a big part of my recent pack release. But now I am getting a notice that your mod is no longer availalble on Curse? Is this temporary? It would require a big rewrite of my quest book if thats the case.

https://minecraft.curseforge.com/projects/openmodularturrets

OMT is still there....

Are you getting this from the twitch launcher?

Not 100% sure, but it may be because you've used a version that's been archived or deleted? Make sure that it's the latest version of the mod.

Yes, its not exporting OMT with the rest of my pack... saying it will be rejected because the mod isnt available on curse any more

It is the latest.

Nope, it is not, I archived build 247 because it had a serious problem with a server crash regarding expanders.