Unable to find virtual screen components

MIT App Inventor Help
1

Hey guys,

first time poster long time reader.
When working on my app this morning, I added the progress bar extension, added another virtual screen for it to test the extension and made some block changes to accommodate.

However since then, when I try to run the app using the companion I get the message: Runtime Error; Cannot find the component: BLscreen. The error happens during the initialization of Screen1 on literally the first line.

I can't seem to figure out what would cause this, even after reading some posts from other users, leaving me stranded at this point.

Any help would be greatly appreciated!

P.S. Total noob when it comes to app inventor, so forgive me if some of the coding makes no sense. And this is still a work in progress, so not all features are fully up and running.
arduinoBTcontrol_Basic_SavedConnection_02_Screen_checkpoint3.aia (263.2 KB)

2

Does it work if you test after building using the apk file?

Taifun

3

Yes it does, so the error is in the companion?
I didn't expect that since it was working fine all morning. Figured I broke something...

4

As a side note, be aware that switching Screens breaks Bluetooth connections.

I say this because you have two screens with BlueTooth components.

5

Thanks for bringing that up!
I already ran into that issue very early on and started using virtual screens since then.
Just forgot to remove the second screen.