I gave up on Draftsight when they locked me out & demanded money to continue, so have no experience with the current version. I do recall seeing something at the time saying that the new 3D capable, charged-for, version was incompatible with drawings done on the original 2D version, but can't find a link for it now.

I changed to the free version of NanoCad, which has opened my old Draftsight drawings without issues so far. I have been able to set NanoCad up so that it looks almost identical to the way I had Draftsight setup & a lot of the same commands work, much as the same commands I was used to with AutoCad LT worked with Draftsight.

There have been a couple of hiccups – setting up different line types isn't as straightforward & you can't do a line tangent-to- tangent between two arcs – but I have managed so far to do what I wanted to do both with new drawings & opening legacy Draftsight drawings.

Nigel B.

This is what someone I make parts for said in an email at the end of October:

Then someone suggested turning back my laptop date. That lets my old faithfull Draughtsight get going, after which I can reset the date – & everything carries on nicely.

Martin C