How to craft Greensteel Items in DDO

Try the DDO wiki page.

The DDO Wiki has a very nice section on DDOs crafting system. I suggest you go there and spend sometime going through the various sections. Each alter does different things and almost all of them are useful at different times in your characters development.

Its a known long standing bug. Devs have mentioned that they "finally fixed it" a few times but it still happens quite often especially if you paralyze them when they are moving. It used to be more common though, so they are improving.