Handling dwg files
File translation between dwg and lcd does not always go smoothly. In our experience, that's mostly because AutoCAD users can easily make 'messy' drawing files complete with all sorts of errors. Although the file will load in LiteCAD.DLL, it may not behave normally in LiteCAD.DLL. Your application may simply shut down when you try to add a file of that type.
Some light reading for you
Here are a couple of articles that we encourage our users to read on the subject of exchanging dwg files
And some examples of problems we have seen.
1. Strange leader style not translated correctly. Resolved by switching to dimension style standard.