Hi, I got the same problem described by Knut Erik Enerstvedt. Do you know how to fix the problem of: “Failed to open document”? Thank you, Ximo PD.: Here is the previous message from Knut Erik: http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/2019-February/030762.html Hello, I have upgraded from TRNSYS 16 to 18, and hope to reuse as much as possible of my old TRNSYS 16 projects. I am able to open T16 projects in T18, but when I save and try to open again in T18, I get the error "Failed to open document". I have also tried to copy everything from the old project into a new T18 project, but then I get the error "Encountered an improper argument". Is there a solution to this problem, or do I have to rebuild everything from scratch? Best regards, Knut Erik Enerstvedt |