Yes there is an option to replace the angle and such in bulk replace, can't remember the exact term but that will overwrite the existing without the...
Could well be a faulty or corrupt asset has been installed, often these don't show up as faulty, have a look the logs for anything that looks like it...
No afraid not as the server the files were hosted on no longer exists, the links are on the wayback machine however they just go to a domain for sale...