If you are experiencing problems when trying to view the NiN10Doh: ToThe64thPower collab, you're not alone (the file loads 40MB of external assets). This appears to only be occurring with a select few people, but below is what I know so far:

1) The entire menu file (827KB) must be loaded before you see a progress bar - sadly I was unable to get a pre-menu preloader working in time. For the duration of this loading, you WILL SEE a blank white screen (then you'll see the 40MB loading progress bar).
2) It seems people with fast connections load the file quickly, but may see a blank screen. Speaking with Mike (of NG), this may be due to Newgrounds throttling of the requested (18) files. Reloading the page should load any missing files (others stored in cache), then it should play.
3) People with slow connections (like myself) may experience the loading stop at some percentage and not continue. If reloading the page does not work, you may have to resort to clearing your cache, then reload the page.

I apologize for the problems people may be having, and if I can find a solution, we will try to get up a newer version of the file when possible.
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Thank you to Tom and Mike who helped Kirbopher and I with the frustrating trial test runs.

I was very surprised to see the professional-level animations from the contributors of this collab. Seeing how well some people did, it is no surprise it took them a long time to complete. Not being much of a gamer myself, I missed some jokes, but I found it all entertaining. Thank you to the artists for contributing your time and effort to make a successful collab.

I am exhausted from dealing with all the problems that come up with working on large files in Flash. I don't expect I'll work on another collab for a long time - NO to NiN128. I first tried to create the main/menu file in July, when Kirbopher was gathering -what I thought then was- the final collab pieces. I was at NG at the time, and Bob was nice enough to let me use his computer to compile it, as he had the best computer available to me. With not even half the segments in the file, it crashed over and over. This became a dead end. I gathered our last resort was to load all the segments externally, and let Flash runtime deal with the problems.

About a month ago, I finally had an implementation working that would load all the segments from external locations and treat them as originally planned. After many loading problems - like non-AS3 compatibility of segments, audio hemorrhaging, random compile phantoms, file-referencing errors, and hours of testing on newgrounds.com/dump, Kirbopher had gathered the last piece and we had something we thought was ready to submit on Tuesday. We submitted it to NG to found that the menu behaved unexpectedly and incorrectly - it was quickly blammed. After regrouping and hosting the files directly on the ungrounded server, we appear to be in business - minus some glitches as stated earlier.

I submitted a NiN64 background for to the art portal here:
http://www.newgrounds.com/art/view/pik anjo/nin10doh64-controllers
AND when I was originally doing concept art for the menu, I tried out a new teacher/student pair. Kirb said to keep with the previous themes instead, so they were dropped, but you can see what they would have been here:
http://www.newgrounds.com/art/view/pik anjo/nin10doh64-rejects

If you missed the submission of the first failed version, below is an excerpt of what NG members had to say.
Let the furry hating begin.