Replying to myself, when I deleted the skinmobile.css file the error did not occur anymore (as I expected).
But as I did not change anything in the CSS files, to me it sounds something gets broken in the process when exporting the Studio plugin from stage and then when validating effectively the same package on the server side (on the stage).
This issue seems to be happening with SDK version 1.0.2 and Lithium version 15.11 still.
In short, when exporting the assets from stage with 'li export-studio-plugin' empty files named 'skinmobile.css' get created in all 'skins/[SKIN_NAME]/mobile/css' folders.
And then when packaging the same very files and validating against the stage server with 'li submit-plugin --dryrun' you get this:
Failure Code: SKIN_INVALID_CSS_NAME Failure Rule: CUSTOM_RULE Failure Message: Skin skype in the plugin has a possible issue. Failure Details: CSS file called skinmobile.css in a css directory should be named skin.css. Failure Code: SKIN_INVALID_CSS_NAME Failure Rule: CUSTOM_RULE Failure Message: Skin skyperedesign in the plugin has a possible issue. Failure Details: CSS file called skinmobile.css in a css directory should be named skin.css.
Then you just need to delete those empty files names skinmobile.css and validation works again.
Sounds like a bug to me.
Cheers,
.M
