Oops, sorry I missed your post. Indeed, that looks like a variation on the same problem. Can you post how you’re including the extensions?
I’m afraid that the current development snapshot will only give you an awkward, undocumented chimera (I’m in the middle of reworking the UI) without doing anything to address your problem. It’s on my list, though I’m hoping for a fix to Inform bug 666 that will simplify or resolve the issue.