i am having the same problem, i was using the osx wallet 1.0.1.17 . i noticed to day that its wayyyyyy outdated, downloaded the new osx gui wallet 0.3.0 and i cant figure out how to import my old wallet. i have the spend key and view key, but neither one is working. is there another key i was supposed to keep? i hope i didnt screw myself. any ideas would be great. thanks
I suggest you to post your issue in the Support channel of the Lines Discord
https://discord.gg/CVT3xmhI was helped there once, so you should help too.
There professionals who know what to advise you are working there.
their advice is correct .... and really are experienced.