upgrade error

How can I allow FusionPBX to continue through with upgrades if I have modified a file? In the GUI, I get the below error. In the CLI, nothing happens when I try to upgrade.

On a instance of FusionPBX running for about 2 months. I get a error when trying to upgrade using the GUI. I have included an image. The output offers some hints for this issue but it wasn't very clear for me on how to proceed. Any guidance that can be offered for this issue is much appreciated.

Issue: When making a ring group(filling it out like normal) all info is keep expect the Destinations. If you back out of the ring group after saving and the update complete message is given your new ring group will not be there. When checking the dialplan you will see that it made the entry for...

I had working setup of FusionPBX on Debian 8 jessie. I updated freeswitch packages at Jun 23 2017. After that I discovered FusionPBX can't update registered agents status, so FusionPBX can't forward calls from queue to registered agent: 2017-07-18 10:09:30.024419 [WARNING] sofia_reg.c:1792 SIP...

I just upgraded to version 4.3.2 and the process appears to have been completed successfully after checking all upgrade options. However, I did receive an error with the following message... " Fatal error: require_once(): Failed opening required 'core/users/permissions_default.php'...