Cannot export to PSD

[Ducky]

Spent a ton of time designing a highway billboard with Affinity Designer.

Ready to send to the printer and i cannot export to PSD or PDF.

I get the error, "An error has occurred while exporting to..."

Supposed to go to the printer today, so not a great first impression.
There are 3 files the main billboard design is 1.6GB, (are you serious?)

i have attached a small portion of the sign, as that is a smaller file size. And very basic design.

Please advise how to export to psd, and reduce the enormity of the design file?

 

highway-merritt-cell-phone-FINAL.afdesign

[walt.farrell]

For exporting to PDF you could try clicking on the More... button, then scrolling down to the Embed Fonts option and choosing "Text As Curves".

[DWright]

The maximum pixel dimensions of a PSD file is 30,000 x 30,000 and your document just exceeds this limit please follow the advice of @walt.farrell to export as a PDF file, you could aso check with your printer to see if they except a EPS file