Version 45.134 was his last stable workbench.library. I'm using it for more than a year now without any problems. But v45.135 wasn't a successfull attempt of Cosmos yet. And I don't spread broken libs!
Since he is also is a member at A1k.org you should have a good chance to ask him for further details. Btw, Cosmos and not Cosmo, please. (Look for cosmosamiga, apex) Thanks!