I designed a standard 6" wide by 4" tall postcard for a client.  Client approved the design and sent it to their printer they have been using for all other projects. Today I received this email:

Client: The printer is saying they can’t print the 6x4 flyer because they only have a 4x6 layout. What should we do to make sure the designed is not compromised.

If a printer can’t rotate the image then you might want to look into a new printer.

Source: Clients from Hell