When viewing your Gerbers and DWG I noticed the following:
1. All boundaries must be closed and continuous. There cannot be any overlapping lines or Arcs. I noticed in your DWG there are several locations where there is overlapping (duplicate lines) -- see layer TOP TRACE+ @ X=37.68 Y=16.93. FAB 3000 (and ACE) has a feature to join boundaries.
2. The DWG contains objects inside other objects which require the feature "De-Embed". The intention is to make inner objects clear or dark depending whether the polygons are islands or holes. FAB 3000 (and ACE) has a feature called De-Embed to automatically determine what should be Dark or Clear.
Here's our generic rules for DWG to Gerber conversions:
Please see my tutorial movie below (showing how to perform the conversion):
Let me know if that helps, and I look forward to hearing from you.