It is not clear in the Viktoria Institue licensing scheme if they are willing to issue "new" free licenses to 2.04 versions and earlier. Rather pre-existing licenses can continue to use 2.04 and earlier. Their website says and I quote:
"What happens with existing licenses and older versions of GapiDraw?
The license issued for GapiDraw up to and including version 2.04 shall continue to be effective. If you have such a license you can continue integrating GapiDraw (version 2.04 and earlier) in your product. The older versions of GapiDraw will still be available on the web for those who are satisfied with them. "
I have a 2.04 installation but not a 2.04 license. The license agreement in the 2.04 distribution reads:
"COMMERCIAL USE. Use of the SOFTWARE commercially without prior consent of the AUTHOR is prohibited. Commercial use includes, but is not limited to, making profit from an application depending on the SOFTWARE to operate correctly. "
So, I guess the point is 2.04 may not be entirely "free" if you don't already have a license so check with the Institue first before distributing any code commmercially...
BTW, I agree with your last comment. I too have not found a better engine than this one for 2D...