I´ve been told in Live Help to submit this as a bug: This quest keeps active in my log but I cannot finish it no matter how many times I assemble and disassemble my machines.
Quest details: Fully Assemble and Disassemble any Machine in 2 minutes. (See the Machine Stand encyclopedia page for which machine types exist and what parts they require.)
Don´t really know how much this information would be helpfull but I run Chrome in Windows 7.
Thanks