I have an idea about the issue, but I not sure, and I hope it could be fixed. The original files were created, encrypted and stored on a D:\ partition of my previous PC.
If you’re getting this issue on your new PC then I suspect that you mistakenly copied the symbolic links to the file and not the actual files themselves.
To test out this theory right click on one of your files and click Properties. Then have a look at the size and report back your findings.
If you have the actual files you encrypted (.AXX) and not just shortcuts then you’ll be able to decrypt them on your new PC. The fact that you don’t have a partition makes no difference.