Hi undeaddemon, it was the same problem.
Even if it's not completely ready, I've uploaded the current state of 1.4 for you. You can download it here, it's called exsp v1.4 (temp).zip:
https://docs.google.com/folder/d/0B-rVm ... 5sMVU/edit (I still have to finish some new spells and documentation before the final release, but the main code should work).
Delete your previous exsp directory and unzip the new one in mod_assets. Then, delete the exsp script_entity in your dungeon, it's not needed any more (it loads itself automatically). That should be it, I've already enabled the wandering lights for you in exsp_init.lua.