Hm, simultaneuous cross-platform and cross-version conversion. Typically these conversions are not problematic for printing but You Never Know. I habitually export INX from CS3 and open the INX in the newer version of ID - fewer composition problems that way. Likewise, saving the newly-opened file, exporting IDML, and re-opening the IDML in CS5 is another way to handle typical cross-version file conversion balkiness.
Can you export a PDF and print that?