Since companion version 2.73a or 2.73au i get runtime errors when using listview component.
To debug my project i deleted all blocks from former project inspite of listview component and still get this runtime error:
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Of course ListView1 block is there.
And when using colintreelistview extension i also get a runtime error:
It is the same if using USB or companion app
This works for me using 2.73au 
I think you are using some extensions, and as we know the official companion has a problem with extensions. You need to use the test companion 2.73ad2
How Do i get access to beta test companion 2.73ad2?
@Boban ok, i reinstalled version 2.73ad2, now it is working fine again with listview 
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I only get information that this companion version is out of date.
Version 2.73au is not working for me.
with version 2.73ad2 it is also working for me again, dont know why 2.73au is not working for me.
It is not working for most people Elmar. Anyone who uses extensions is affected. Others are not. It works for me because I am not using extensions. 
You can use the test server to check out a proposed fix. However you should not use the advice to publish your app. Instead wait until MIT fixes the problem.
When you use 2.73ad2 it will help MIT see if the possible fix will work.
You use 2,73ad2 only to test.
You still cannot use 2.73au. 
on the main server while using extensions. I don't have any extensions in my app so for me it works; you have to wait for a real fix, not a test fix. Remove your extensions and 2.73au might work for you now.
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I guess Google Play Store will also accept third party extensions after companion fix?
Google Play will accept your app which might also use some extensions. It does not matter if the companion app is working or not.
Taifun