Have PDF from Powerpoint, the digital platemaker doesnt like it

[VicoDrive]

I have a PDF from a customer that sent us a PDF that we are trying to print on our new DI machine (full color offset).  From what my pressman is saying, it is showing up as a mix of RGB and CMYK so its screwing up when it burns the plates.  It turns out the customer created the PDF through Microsoft Powerpoint (yeah I know!!).  Is there a way to properly prepare this PDF that should make the offset accept it?  Im seeing some CMYK settings in Acrobat's Preflight that I feel might help but Ive never had a full understanding of color profiles to know what these mean.  I attached an image of the choices

[Test Screen Name]

A modern RIP (platemaker) should happily handle a mixture of RGB and CMYK, converting with the right profiles and making a correct plate. However, maybe one of these applies (you need to know which):

* the platemaker is ancient and does not convert RGB to CMYK

* the platemaker converts RGB to CMYK but the colours are bad.

You can certainly use preflight to convert to CMYK, but you absolutely need to know the correct profile for your press (not the platemaker). There isn't a generic solution. The profile really comes from the actual colour of your inks, and the properties of the paper. Often, special software is used to make a profile for the exact conditions.