Error when profile directory is on RAMDISK

[nebosuker]

Thank you for great extension.

Format Link fails to store/read data from profile if profile directory is on Ramdisk.

Steps to reproduce this failure

1. Install ramdisk driver and utility using imDisk Toolkit
2. create ramdisk using imDisk
3. create fresh Firefox profile on the ramdisk
4. install Format Link add-on
5. open Format Link add-on option page
6. push [Save changes] button.

Expected behavior

Button saves setting to profile directory.

Actual behavior

Button fails to saves setting to profile directory. All title/format/HTML field is empty.

Environment

Windows 10 (2004, build 19041.685)
ImDisk Virtual Driver 2.0.10
ImDisk ToolKit 20200609 (10GB allocated to ramdisk, driveletter is R)