'Unknown Error' when dropping PNGs into Acrobat Pro DC

[RichardH67]

I've recently upgraded to Illustrator 2019 and Acrobat 2019. I'm on an iMac running OS Majove 10.14.6. Usually I create PDFs by firstly exporting pages from Illustrator and then dropping the resluting PNGs into Acrobat. This then creates a multi page PDF. However since the upgrade every time I drop PNGs into Acrobat I get an error message window pop up with 'UNKNOWN ERROR' inside. I can only click 'OK' and then no pages are created. Has anyone else experienced this? I have gone through the online chat thing with Adobe but they dont seem to be able to replicate the problem! Any thoughts greatly appreciated.

[Loren Rye · Accepted solution]

Apply the update here:

https://community.adobe.com/t5/Acrobat/Acrobat-DC-amp-Reader-DC-Optional-update-for-Windows-and-Mac/...

It fixed my issue.  

[RichardH67]

Many thanks for your reply. The IT department where I work installed the new Acrobat update - and hey presto it worked! I only wish I'd posted here first as the online chat thing through Adobe took ages and was a conplete waste of time!