Thus it's limited to major mods with a presentable API and one that has been used.
Example: Thaumcraft would likely have multiple addons put into the pack like Automagy, Thaumic Horizons, and Thaumic Tinkerer.
I get the feeling that your original world is now lost. Adding and removing mods tends to break the questbook- which is likely the source of your issues.
That is the launcher log. We need the actual crash report.
How did I even miss that post....?
I'd suggest waiting for the next update to happen. We are currently testing the pack with updated mods.