We'll reply and then have you send us some files that demonstrate the problem you are having. That way, we will be able to see the problem for ourselves, and then fix it.
Hope pangolin will nudge me when questions like these pop up about flash as there are a lot of fixes that you can do to fix issues that I know off.
I can explain why this is happening.
Please save your flash project target to adobe flash 6.
Errors will be created but it can be ignored and lines will work better when doing this