Re: InDesign & printing problems

Portable Network Graphic. The only thing png files are good for is the web. But, they're not excepted yet by any of the major browsers. However, Flash can read png files and use them as they have a lossless compression scheme. Somewhat like LZW (Lemple Zivh Welch I think is close to the spelling) compressoin for tiffs.

Anyway, the png format wouldn't be good to use at this juncture anyway.

Legacy+ if you're using Illustrator CS or CS2, the only way to save a backward compatible file for use in older versions of Illustrator (up to version 10) is to go under File then Export.

If you're using Illustrator 10 or below, you won't have the Legacy option once choosing Export so don't bother.

Another usual fail-safe, is to open the Illustrator file in Photoshop and select CMYK and 300 dpi for Photoshop to raster the file. Then, you're placing a rasterized image instead of a vector. This can especially help alleviate missing fonts as Photoshop will tell you before it rasters the file that fonts are missing. Save the Illustrator files as Illustrator.eps for back up. If any changes are required in the actual Illustration, you can always go back to the original file, make the change and then re-raster in Photoshop.

Give that a try.