I am running up against a wall in V18 where I need to do a presentation that has viewports and I'm getting UE's when I try to use floating model space.
I had assumed that in case of problems I could always save my file in a previous format, compatible with V15, which I still have installed. It won't be the first time. Many of us had to revert to previous versions when new TCAD versions came out and didn't work. Today I felt I had to do this again in order to do the presentation. I was surprised when I found only a current choice for TCW and TCW V17. I tried to open the file with V15, not really expecting it to work, and sure enough it didn't. I looked for a file export option, but didn't find one. I found a tool to convert files, but it had only the same choices.
Where do I find the utility or tool to save the V18 file back to some version that V15 can read?