Update 81 Messed up Mine and My Friends server

My server located at 216.245.218.186:27015 and my friends which he shut down because he has had to recode his server many times before, is now messed up. E2 says “Loading extensions please try again in a few seconds.”

Welds dont weld, so if i spawn a ranger on a prop about 2 seconds later it drops down like someone has unwelded it. Please help.

Thanks in advance, Burned

edit:

These are not the only things going wrong, Adv Dupes sometimes spawn with random props and random Materials and colours. No Collide multi doesnt no collide when Clicking, smart constraint doesnt work.

Try some of these fixes. http://www.facepunch.com/showthread.php?t=944133