It will either not repond and fatal error, or plot out a pdf with missing text and blotchy image. Not sure how to fix this issue, it is with all DWG so it cant be just purge and audit to fix the problem (which I tried).
using Autocad civil 3d 2010.
Have you tried lowering the resolution of your pdf output?
its almost like it is being rasterized. Still having issues, I tried downloading PDFill.exe to see if its a pdf problem, getting the same issues, must be a setting or something in Autocad. I am tried uploading an example pdf, but it the forums wont allow me to upload it, stating that the file format doesnt match the file im trying up upload.