Can anyone tell me what this means?
Sorry, I cannot display code due to privacy regs.
Sure, if you provide some code.
Sorry, all we can help with in that situation is the haystack of general advice https://community.appinventor.mit.edu/search?q=runtime%20error
Somewhere, you are attempting to populate a variable or list item etc. that does not have a value yet.
Check if you are running the latest Companion.
Do you have a Procedure that is expecting to receive a value (argument) for processing, but a button click or other event is calling the Procedure without sending a value? Or, a Procedure that used to require a value that has since been modified to exclude it?
We shouldn't see this error in the latest versions of AI2 but it was an issue before:
It might also be related to switching screens incorrectly:
... and also might be a bug in an Extension - could simply be an extension version that is not compatible with the latest AI2 or latest Android.
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.