Invalid Screen: package null, Unknown, version 0.0

[Daniel_Edixon_Medina]

Greetings for all of you!

I have a problem while developing my app. I have added several screen since I need to create more events. Once I haved added them, one error ocurred: Invalid Screen: package null, Unknown, version 0.0

What do you think can be the reason of it? I appreciate any help. Thanks

[Taifun]

@Daniel_Edixon_Medina

I have added several screen since I need to create more events

how many screens did you add?
have you considered following tip 1?

General Tips and Tricks for App Inventor

This list was made by @Taifun Use different screens wisely Before starting to create another screen, first you should think about is it really necessary? See also Building apps with many screens and SteveJG's post about advantages/disadvantages, because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed... If you decided to use different screens, then you should switch them correctly, else you …

Taifun

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Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.

[ABG]

@Daniel_Edixon_Medina

I need to create more events.

What kind of events?

[Mostafa_El_Assal]

Same
i have the same problem
Help please
thank you