(Unfortunately, I don't have any of that wares or skills. What must I do to move Sheetcam to the new PC Dave.

But first we'd need the right people with the necessary hard and software, and technical skills, to investigate. I tried, unsuccessfully, to install the originally issued license file and the plugin for the knife tool. But if some cause can be pinned down, or at least suggested, it would probably be worth the trouble to make the report. I'm not sure if a bug report regarding incompatibility with Sheetcam would be appropriate. And as I mentioned, we'd be glad to look at a test file, if it might help. There may be other solutions as well, but those are all I can think of.

Or you might consider simply scaling the image with Inkscape, once you have it open. So you might try using different options. There are some options when you open the DXF file, where you can choose among 3 or 4 scale options. However I later discovered that the image was simply so large and I was just looking at an open space in a huge image! They're line drawings, after all. For the longest time, I thought there might be a bug, or something wrong with my system because whenever I tried to open a DXF file, it would appear to be an empty file. One thing I've experienced in opening DXF files, is that they open as a huge image. It won't hurt to perform those steps, even if you don't need to, and it's the first step for troubleshooting.) (Even though that faq implies that the problem would create a too-small file, I have seen cases where a wrongly set Scale was making the images too large. Follow the steps in this faq item, and test to see if that solved the problem for that file. If you have a test file, or you could make a simple file for testing, please share it (or them) with us. As I mentioned in my reply above, we need to look at each individual file.

Sheetcam plugin