print to pdf format seems to be ok - what I mean by this is when I create a pdf file from an email or a google doc (for example) by selecting print to pdf function rather than a printer. These pdf files open without the error message. My default pdf application is WPS office. I often create pdf files using this then open them in acrobat. perhaps there is a conflict occuring ... View more

thank you for your reply - it seems to be happening to all the pdf files i have downloaded and filled in recently official forms from the ombudsman service to be completed and returned - when i reopen them i get the error message print to pdf format seems to be ok ... View more