i have downloaded the example and tried to compile it.
i did this too to test it.
i unpacked the lib.
copied the jar and xml from thr lib folder to additional libs.
i opened the example in b4a 7.01
i veryfied that the res folder is inside the project folder (due to the #additionalres-directive)
Connected my device
F5
i got no error.
I´m using
Appcompat lib V3.52
it maybe has something to do with the android.jar you are using (Tools-Configure paths). It should be the jar from platform 25 as of today. Which one are you using?