Resolution:

The above error message occurs when a process tries to open the rvrd configuration file, but it is not allowed to do so.

The most likely causes are:

1. the file is in use by some other process.

2. the process does not have the appropriate permission to read/write the file.

One possible scenario would be:
- the rvrd dies
- the store file is not released yet when the new rvrd starts and read from the same store file
- hence the error message.