Hi there. I'm having a strange persistent problem with this one assembly that has several Library files inserted from different Library Folders. When I open the Assembly, it is always loosing the correct Library File location of one of the parts. Then I close the files without saving it, go to the open file menu, select the assembly, select references, correct the file location, close the menu but the correct location never stays saved. I'm pretty sure it this solution worked well the first time the problem happened but now, not only the problem happens from nowhere as the solution does not work. It's like a disease getting worst! Does anyone has the same problem?