I can't get the channel images button to show up in Wygwam. I'm running EE 2.5.3, Wygwam 2.7, and Channel Images 5.4.2. I have made sure to install the channel images plugin in the themes > third party > wygwam > lib > ckeditor > plugins folder. There are no javascript errors being thrown. I've cleared my cache on browser and ee cms, and tried with a new configuration and existing one. The channel images and wygwam fields are in the same field group. I've performed a "Run Module Updates" in the Modules menu in EE.
I've also noticed another error - which may be with my configuration or with your plugin, where if you go to Admin > Channel Administration > Channel Fields > and edit your wygwam field, then click on "Edit Configurations" under editor configurations, it takes you to a page that says "the requested module could not be found". But if you go to edit the configurations from Addons > Modules > Wygwam > Editor Configurations - it shows up properly. No errors are thrown in the console.