I've looked around on the internet for a solution for this, but I'm finding no answers that help.
I keep getting the following errors in Acrobat Pro 9.3 when trying to use the pdf optimizer. It's driving me nuts. I'm trying to compress an Indesign CS5 generated pdf. It contains transparent objects, and all the images are .ai files.
If I leave the transparency box unchecked I immediately get this error:
An error was encountered while processing images.
If I check Transparency, it shows the little loading bar, as usual, and then when that's done I get this:
An error was encountered while flattening transparent objects.
The most annoying part of this, is that I've been using this same file for months now. Every so often the disclosures on it get updated, and I make the edits in Indesign, export, add form fields, and compress using pdf optimizer. Why all of a sudden is it grumpy? Is this a CS5 issue, because this form may not have been updated since I upgraded to CS5 from CS4?
I've tried swapping out the .ai files with newly saved CS5 versions. I've tried flattening layers pre-export. I cannot remove transparency, so that's not an option. But, as a test I removed all images before export and the pdf compressed fine. Any ideas? There's no broken links or anything in the Indesign file.