fastlane: In order to save your changes, all s must be a .jpeg, .jpg, or .png file that is @@DIMENSION_VALUE@@ pixels , at least 72 DPI, and in the RGB color space - deliver 1.1.0

Original issue by @The-Guru - Imported from fastlane/deliver#364

Hi @KrauseFx

Sometimes I get this error while saving screenshots:

/Library/Ruby/Gems/2.0.0/gems/spaceship-0.10.1/lib/spaceship/tunes/tunes_client.rb:147:in handle_itc_response': In order to save your changes, all s must be a .jpeg, .jpg, or .png file that is @@DIMENSION_VALUE@@ pixels, at least 72 DPI, and in the RGB color space. In order to save your changes, all s must be a .jpeg, .jpg, or .png file that is @@DIMENSION_VALUE@@ pixels, at least 72 DPI, and in the RGB color space. In order to save your changes, all s must be a .jpeg, .jpg, or .png file that is @@DIMENSION_VALUE@@ pixels, at least 72 DPI, and in the RGB color space. There is an error for 1 of your localizations. (Spaceship::TunesClient::ITunesConnectError) from /Library/Ruby/Gems/2.0.0/gems/spaceship-0.10.1/lib/spaceship/tunes/tunes_client.rb:275:inupdate_app_version!’ from /Library/Ruby/Gems/2.0.0/gems/spaceship-0.10.1/lib/spaceship/tunes/app_version.rb:265:in save!' from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/lib/deliver/upload_screenshots.rb:43:inupload’ from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/lib/deliver/runner.rb:52:in upload_metadata' from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/lib/deliver/runner.rb:19:inrun’ from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/lib/deliver/commands_generator.rb:47:in block (2 levels) in run' from /Library/Ruby/Gems/2.0.0/gems/commander-4.3.5/lib/commander/command.rb:178:incall’ from /Library/Ruby/Gems/2.0.0/gems/commander-4.3.5/lib/commander/command.rb:178:in call' from /Library/Ruby/Gems/2.0.0/gems/commander-4.3.5/lib/commander/command.rb:153:inrun’ from /Library/Ruby/Gems/2.0.0/gems/commander-4.3.5/lib/commander/runner.rb:428:in run_active_command' from /Library/Ruby/Gems/2.0.0/gems/commander-4.3.5/lib/commander/runner.rb:68:inrun!’ from /Library/Ruby/Gems/2.0.0/gems/commander-4.3.5/lib/commander/delegates.rb:15:in run!' from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/lib/deliver/commands_generator.rb:84:inrun’ from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/lib/deliver/commands_generator.rb:12:in start' from /Library/Ruby/Gems/2.0.0/gems/deliver-1.1.0/bin/deliver:5:in<top (required)>’ from /usr/bin/deliver:23:in load' from /usr/bin/deliver:23:in<main>’

I have checked that everything in the screenshots is ok (dimensions, 72dpi, rgb color space) but it only appears sometimes. It usually works. What could be happen?

Thanks. Best

Óscar