Solidworks, as always, is lazy in updating their API. Most of the time, the new API is released three months after the release of a new SW version.
The keyshot team integrated the latest SW API, so importing your models won't be a problem anymore.
Overview of *confirmed* fixes/features:
- SW2011 support
- Fixed memory overflow
- Reduced memory requirements
Possible feature for releases after 2.2:
- clearing memory automatically as needed
When the update is released, I'll post the changes made.