ois wrote:I wonder it this is to do with my cack-handed attempt to migrate to the new pc?
Possibly, although it shouldn't have caused this particular problem
ois wrote:basically i upgraded to 2.3 (via all the betas) on the old pc then copied the users folder over to the new pc (which had a fresh install of 2.3)
Did 2.3 work OK on the old PC before you copied everything over?
ois wrote:the new (fresh install) has a different structure - it has some files in the application data folder and no existing user folder
The new file structure is described here
. All the files are still the same, they're just stored in different places. However, if 2.3 finds a Users directory in the old place, it will continue to use that (for backwards compatibility).
If you really can't get things to work, delete your ARCHIVE.DB file. You'll lose all your archived content but you'll get a fresh start.