Disabling instant run also disables breakpoints

Question

I've recently ran into:

Unexpected scopes found in folder 'TrivialDrive_v2\mobile\build\intermediates\transforms\dexMerger\debug'. Required: EXTERNAL_LIBRARIES. Found: EXTERNAL_LIBRARIES, PROJECT, SUB_PROJECTS

which has a fix suggested here , which fixes it but now, the debugger won't stop on breakpoints (tested on the main activity's onCreate()).

Other suggestions , mention adding:

multiDexEnabled true //important

to defaultConfig {} in the gradle build files. Already have that (ran into this earlier), but execution still doesn't stop at breakpoints. Initially it did. Why?

The app is trivial drive v2 , extended with predefined testing SKUs (android.test.purchased, etc.)

Answer 1

Deleting the directories .idea and .gradle in the project's root directory, invalidating caches and restarting android worked (at least for now).