So far I have only seen this happen with PDF's that I have made into Fillable Forms with Acrobat or Adobe LifeCycle Designer.
When I try to open one of these PDF's from a download List I occasionally get this error
When I have succesfully downloaded or opened one of the PDF's when I try to save, save as, or save as copy I get these errors.
Here is a link to an example of the type of PDF's I am refering too
I have tried using both Custom Library and Document Library options for these files and I still get the errors.These files work fine on my other website and on my computer before being uploaded to sitefinity.
Please Help. Thanks.