Good news! We merged our latest into the 4.11 branch, so if you pull from GitHub on the 4.11 branch you will have the most recent version of our plugin, compatible with UE4.11. It also includes our brand new IDE. Hope that will address the error you have been experiencing.
After upgrading, we recommend that you run a
UnrealHeaderTool to make sure our latest UHT plugin re-runs prior to building the engine.
We also posted 4.11-compatible versions of our demo projects SkookumDemo and FireBot on our download page. The FireBot project is an example of how to integrate SkookumScript with C++. For more details on this, check out our guide on how to set up a C++ project to work with SkookumScript.
We released the new IDE just two weeks ago, and there are still a few minor glitches. We are working on these as we speak. If there are any other issues, please let us know - we're here to help!