[NTG-context] printing problem

I have a 24 page PDF file produced using ConTeXt ver: 2007.02.21 11:55 MKII and the latest TeXShop. I can only print pp. 1-3 of this file with TeXShop. Acrobat Pro, however, has no trouble printing the entire file (mercifully—this paper is for a conference for which I leave tomorrow) and TeXShop has no problem with my other files, some of which are quite long. So I do I figure out what the problem is? It seems to be with the file, but I have no idea what. The encoding is hardly weird or unusual. Though I can print the thing, the problem is still somewhat pressing. I sent the file to two people who usually have no difficulty with my PDFs. But this time one could not open the file—it was reported as damaged. Alan