Uncaught TypeError: Failed to execute 'getProgramParameter' on 'WebGLRenderingContext': parameter 1 is not of type 'WebGLProgram'.

[andrewvarga]

Recently I'm getting this error when trying to inspect a webgl app:

Uncaught TypeError: Failed to execute 'getProgramParameter' on 'WebGLRenderingContext': parameter 1 is not of type 'WebGLProgram'.
at StateSnapshot.apply (:2671:17)
at Frame.makeActive (:3105:27)
at RedundancyChecker.run (:6406:15)
at Function.RedundancyChecker.checkFrame (:6455:23)
at TraceView.setFrame (:9864:38)
at Tab. (:9428:28)
at EventSource.fire (:873:35)
at LeftListing.selectValue (:7329:28)
at Window.appendFrame (:7130:21)
at CaptureContext.captureCallback (:3166:28)

In this case "program" is null:
if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
gl.linkProgram(program);
}

Interestingly I only see this for some of my projects (I can provide source or link)

[Micha0]

probably a duplicate of #159? Have you tried removing all calls to gl.getExtension?