Ian162,
Would you provide more information about the problem?
- What is the version of your Adobe Reader for iOS?
- Does the problem happen with all PDF documents that you have or just a particular PDF document?
- Is the invalid PDF document the email attachment that was originally opened from Apple Mail (the default mail app for iPad/iPhone)?
- Do you recall the last operation that you performed (e.g. adding comments, filling out form fields, saving to Acrobat.com) before the PDF document was damaged?
Thank you.