If you try to render an Adaptive Form that was previously working well and after a modification gives you nothing but a “Error reading ‘guideInitializationState’ on type com.adobe.aemds.guide.common.GuideContainer” error then you’ve created a repeating panel in your form that isn’t mapped to a schema.
If you’ve created a form based on a schema, repeating panels need to be mapped to a repeating element in your schema or this error will appear when you attempt to render the form.