Yes, because it only supports Batari Basic's standard kernel. Once the tool does every thing it can do for the standard kernel, I intend to implement support for the DPC+ kernel
I'm sure why, but I have a feeling that there is a non-DPC+ multi-sprite kernel somewhere on the AtariAge forums. I just realized this since some DPC+ games are usually underwhelming for something like 32+ KB A2600 rom.
Probably for the best...but I do recommend that you use a kernel that is 32KB or lower. Mostly because some kids will use the Atari + platform to test their Atari 2600 games made with this thing.