Done strange lines and invisible blocks. I died from this and since then, I can't play it anymore.

so far only regrowth works I tried other packs and nothing.

 

Looks like something got corrupted in your files, resulting in polygon corruption.

I'd recommend completely removing Regrowth from your computer, and then reinstalling it.

 

Dint know what the problem was but a update on the server fixed it so it may have been a bug don't know.

 

Ive had this before, normallty restarting the pack fixes it