🚀 go-pugleaf

I just installed Mac OS 9.2 and now I can't get any version of AAR to work- neither the version 3 which came with OS 9.2, nor version 5 which I tried (in vain). the stand alone version doesn't work either. More specifically, when I try to open a PDF file I get the message: can't find ~ATM extension. So I checked my extensions folder- and something (not me) had caused that extension to be turned off. Every time I turn it back on and reboot, it turns of again- (updating, reverting, or creating new extension sets doesn't help). Alternatively, when I try to open the reader application rather than a PDF file, I get the message "extensions set does not match contenets of system folder". I've tried reinstalling reader a couple times- nothing seems to work. Is it just an unresolvable conflict with Mac OS 9? PLEASE ADVISE (I see there are several similar posts recently, but no solutions from Adobe)