EasyExperience script not generating XP Tracker

As explained in the Title, really. I've uploaded the EasyExperience script directly from the Mod Library, and it is not generating  a character sheet named ExperienceThresholds as the blurb says it will. This means the script can't record Session XP and I can't define the XP thresholds for Level Up. None of the Chat commands seem to be working either–– even !xp help does nothing.  I'm new to using scripts on Roll20 and it's possible I'm missing something obvious, but any help more experienced users can offer would be appreciated. 

Hmmm, I haven't updated that in a while, so it shouldn't have a new issue. Are there any errors displayed on your API script page?

Hi Scott,  Thanks for the response. There was an error message, it said something about no attribute being found for Session XP. I've gone back into the game today to try and replicate the error, but slightly embarrassingly the script now seems to be working–– I typed !xp config, which did nothing previously, but today I got the Help page and a character sheet called ExperienceThresholds has appeared. All commands now appear to be working.  No idea what's happened here (doubtless I did something silly), but apologies for wasting your time.  P.S. It might be worth noting that the help page gives the command  !xp challenge @{target|npc-xp} as an example, but the field is npc_xp. Didn't take me long to figure out, but might be worth changing the help page if it' a quick job. 

Good to hear! And thanks for the catch on the xp attribute, roll20 changed some things on the sheet a few years ago. Apparently I never synced the script.