The Law of Unintended Consequences holds that almost all human actions have at least one unintended consequence.
In attempting to make the EE RAS Tools more bombproof, we are running some behind the scenes data validation. This checks for things like reversed sections, alignment flow direction, crossing bank alignments, etc. In this process, we’re calling a portion of the C3D code that doesn’t exist in 2006, so the program fails to run. We’re working on a solution, but it might mean less data validation. If you’re on 2006, you currently cannot use the tool.
In the interim, you can open your dwg in 2007, export data, and then close the dwg to avoid making a version change. Our apologies for the issue, and we’ll let you know when we have a fix. Thanks!