(Got your book on my kindle and wrote a review)
for the other plugins I got this:
Using engine plugin: PlatformerCamera\engine
Plugin "PlatformerCamera" was created for an older version of GB Studio and may not work correctly. Plugin uses engine "3.1.0-e15" but GB Studio is using engine "3.2.0-e4".
Using engine plugin: PlatformerPlus\engine
Plugin "PlatformerPlus" was created for an older version of GB Studio and may not work correctly. Plugin uses engine "3.1.0-e15" but GB Studio is using engine "3.2.0-e4".
Using engine plugin: PlatformerPlusGravity\engine
Plugin "PlatformerPlusGravity" is based on an unknown engine version and may not work correctly. Plugin authors can fix this issue by making sure `engine/engine.json` exists in the plugin containing at least `{"version": "3.2.0-e4"}`.
have the other 3 plugins been updated?
also is there a way to donate or pay ?