[b3nz]

To use it in an include, you need to hook the callbacks, because it conflicts with other includes (in this case - streamer plugin's include and one more which I don't know.)

Take a look or this:

https://sampforum.blast.hk/showthread.php?tid=570910

Or, you could use y_hooks, although I wouldn't recommend to use it if you're going to use the whole YSI library for this script only.