I am getting this error while uploading my app "the icon found in the package is not a valid png file"

[ashokqos]

Friends,

I have followed the details at following link, but still I am getting this error "the icon found in the package is not a valid png file" while uploading my app.
http://docs.splunk.com/Documentation/Splunk/6.2.5/AdvancedDev/AddConfigurations#Add_app_icon_images

Screen shot attached so as to share the png image details along with error message.

Thanks
Ashok

[ashokqos · Accepted solution]

I managed to fix this issue.

Actually following thread mentions that appLogo is optional and therefore, I didn't use appLogo.png image in my package.

https://answers.splunk.com/answers/25394/application-icon.html

However the moment I added the png image appLogo.png and appLogo_2x.png I was able to upload the app successfully.
The size of images are equally important and the same is explained clearly at following link.

http://docs.splunk.com/Documentation/Splunk/latest/AdvancedDev/AddConfigurations#Add_app_icon_images