Can you send me your Skyline document and your raw file?
In Skyline you can use the menu item:
File > Share
to create a .zip file containing your Skyline document and supporting files.
If that .zip file and your raw file are less than 50MB you can attach them to this support request.
You can upload larger files here:
Does your raw file have SRM data in it, or were you extracting chromatograms from full scan MS1 and MS2 data?
With SRM data, the usual reason to see the "Chromatogram information unavailable" message is that there were no SRM chromatograms in the file which matched the precursor and product m/z's of the transitions in your document. When I want to figure out why that is happening, I use ProteoWizard SeeMS.exe to look at the raw file. If the difference between the m/z's in the raw file and in your Skyline document are small, then you can usually fix this problem by choosing a larger number for "method match tolerance m/z" at "Settings > Transition Settings > Instrument".
With full scan data, the problem is usually that there were no MS2 spectra which matched the precursors in the document. I usually use SeeMS.exe to diagnose this sort of problem too, and maybe adjust the settings at "Settings > Transition Settings > Full Scan".