Flat pattern drawings are invisible on the drawing sheet, but not in the model

Hi guys

First forum entry so be nice.

Not sure what ive changed because the drawing was originally fine, but now the flat pattern has become invisible. The dimensions are all still there and attached, including the bend lines and bend notes, but the image itself is gone.

In the model, the flat pattern is fine.

The flat pattern is also invisible in the view pallete

Ive tried refreshing the drawings and restarting the pc, as i assumed it was just a solidworks glitch, but no progress. Like i said before the drawing was previously fine, i opened it up to pdf the drawing and it broke. Ive also tried dropping the flat pattern model into the drawing again, but still nothing appears.

any help would be appreciated.

cheers

SolidworksDrawings And Detailing