Sorry for the multiple comments, but there appears to be no way to edit them.
This fixed it:
loadPrcFileData('', 'textures-power-2 none')
Maybe the FilterManager should at least emit a warning if that setting isn't properly set and someone attempts to use the filters? It's a bit counter-intuitive that it just breaks with no immediately obvious reason.
Sorry for the multiple comments, but there appears to be no way to edit them.
This fixed it:
loadPrcFileData('', 'textures-power-2 none')
Maybe the FilterManager should at least emit a warning if that setting isn't properly set and someone attempts to use the filters? It's a bit counter-intuitive that it just breaks with no immediately obvious reason.