[Hopperxx] How do you debug a projector?

[Valentin]

ps:

>> How does one know which Xtras are required if you are not there to 
>> answer the question, Valentin?

to answer this one more generically: apart from some special stuff (like
e.g. Google SketchUp support or native MP4 support), the list of
Director's default xtras has hardly changed over the last decades.

Here is an older (2002, for Director 8.5) TechNote that lists all those
xtras and describes what/when they are needed (for):

http://web.archive.org/web/20050411103250/http://www.macromedia.com:80/cfusion/knowledgebase/index.cfm?id=tn_16076

As mentioned above, most info found in this document still applies.
Since Director 11 there is this additional second sound engine based on
some new xtras (like "AudioMixer.xtra" and "CoreAudioMix.xtra"), but
since your older movies don't use it, I don't think that those new xtras
are needed (I had nevertheless added them to my previous "test list"
suggestion just in case, because I'm not 100% sure about this).

Valentin