Error no method named 'Keyfile' in class com.google.appinventor

Hi two things

firstly, im getting this error message no method name 'KeyFile" in class com.google.appinventor.components.runtime.FusiontablesControl

secondly, when i press UseServiceAuthentication and apply my ServiceAccount Email the application doesnt work.

If you need to look at the blocks.. can you tell which ones that you will need to see

Please do NOT double-post on this forum.  I have deleted your other post.  We get to these as fast as we can, and double-posting just wastes space and time.

Post screenshots of all of your relevant blocks... this means any blocks that have to do with the issues you're having... the more you show, the better we'll understand.  If you're not sure how to take screenshots, read the section in my tips below.

see my answer in your other thread

https://groups.google.com/d/msg/mitappinventortest/WDiHwvS98oI/10yyaHtVlFUJ

hi these are my blocks that i had changed based on tutorial   

the error designer image   ... the app will not work if i select UseServiceAuthenication or allow my ServiceAccountEmail

What is the Version number of your companion app?

it says Version 2.11 ai 2   i have updated 

the current version of the companion app is 2.23ai2zx1

see also here to download the latest version http://appinventor.mit.edu/explore/ai2/setup-device-wifi.html

version 2.23 ai 2zx 1

Current version is 2.23. 

Do a Hard Reset from the Connect menu.  Then, open the emulator again from the Connect menu, and follow the instructions EXACTLY.  That means, you have to carefully read each message posted...

ok, if you now have version 2.23 installed then I recommend you to start doing the recommended steps to create a new project again

How to use the Service acount option to connect to a  Fusiontable

also use the example app to download on that page to test the service account option together with your table

btw. in your screenshots I can see a keyfile starting with 4f in the Designer, but in the Blocks Editor you are using a file starting with 8b, this obviously will not work...