I cannot change the recording folder to the external sd card. Please note that I have already read the older issues on this matter but it seems to me none of them is applying to my case. I have a Samsung Galaxy S5 with Lollipop, so I think writing on external card should work provided the application is making use of the correct Google api.
Note that I also tried your suggestions I read in other post: uninstall, reboot, reinstall; I tried to change the recording codec; I tried to create the folder before to open acr settings or to let acr to create it. I also tried to maintain the same folder name "ACRCalls".
Non of this helped: I always get a message "An error occurred" (actually, in italian "Si è verificato un errore") the moment I try to apply a different folder setting.
Can you help?