Error when i try to import an app in another environment

Where/how did you get the zip file you're trying to import?  How large is it?  Are there any other unusual circumstances that we should know about?

Is a file with 11 MB, is that a problem??? we have imported previously the same application and it was well , this time the app have more items.

Is a file with 11 MB, is that a problem??? we have imported previously the same application and it was well , this time the app have more items.

11 MB should not be too large. 

• Has something been changed within the ZIP file since the export occurred? 
• Can you attempt to re-export it from its source environment and try that one instead? 
• Do other app pakages (for example something simple) work when trying to import into your target environment?